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eat-worms · 4 years ago

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T.H.O.M.A.S

Technological

Human

Operations

Mimicking

Automated

System

Sanders Sides AU where Thomas is a Robot the sides are building.

🤖=🤖=🤖=🤖=🤖=🤖=🤖

Plot: A bunch of 𝑔𝒶𝓎 scientists have to begrudgingly work together on building their robot son.

Patton- Was originally the bubbly receptionist for the lab, but after a few run ins and or shenanigans Janus realizes that Patton is really good with people and is the perfect test subject and consultant for Thomas's emotion replication abilities. So he officially hires him. (cant do tech stuff at all. cant even "hang out" with Thomas without something breaking)

Logan- The one building the robot parts of Thomas. Gets fed up with the other's antics but couldn't do it without them :)

Roman- Engineering. Designs the stuff on paper and in little prototypes. wants to constantly make Thomas "cooler" and adds in random things in the designs like a soda dispenser and Logan is tired™

Remus- Testing. Makes Thomas do stupid stuff and films it and Logan is like "how did you get a degree of science you buffoon??" and Roman just cackles and it inspires him to add more ridiculous and obscure things to Thomas for Remus to test.

Virgil- Techie that programs Thomas and also helps Logan build but mainly works on the safety aspect and fixing stuff after Remus tests. He also loves the wacky tests but if ANYTHING happens to Thomas u will pay. He adds protections and warnings in his comments/notes like "do not. under ANY circumstances. put Thomas within a 5 foot radius of a spider." just to confuse and annoy Logan (he may also be half serious) and Logan doesn't know what to do with any of it.

Janus- Director of the psychological studies for Thomas. He is very well versed in the ethics of the field they are working in and wont hesitate to debate you. He mainly focuses on trying to make Thomas act like a person even though hes a Robot and alongside Roman helps translate that into something that can be built. Hes also kind of the leader, along with Logan.

Moments:

Logan: This is test number three-five-o-two at 3:25 PM EST on July 3rd 2020 to evaluate-

Virgil: Logan, why is Thomas talking to the stove?

Logan: Wh-

Roman: Aw come on! Look at how stupid he looks talking to the kitchen appliances Logan, you made him stupid.

Logan: I dID NOT make him STUPID YOU-

*Janus later has to end the kerfuffle after he walks in on Logan, on top of Roman, holding a soldering iron to Roman's throat*

~~~

*Thomas is booting up but it's taking a while*

Roman: Tom

Patton: Tomathy

Roman: Tommy Salami

Patton: Tomalama ding-dong

Roman: Thomas the DANK engine

Logan: ...

~~~

Logan: I know him better than anyone because I know how he works so-

~~~

🤖💖More Lore💖🤖

Logan does the know exact time thing but says it at the same time as Thomas when someone asks what the time is.

🤖

Virgil will talk to Thomas like hes a person and Logan is confused by this but Virgil uses the excuse that hes supposed to seem like a human so why not talk to him ¯\_(ツ)_/¯. Virgil also kinda vents to him but uh big ouch a lot of it gets recorded onto Thomas and that gets turned into either hyjinx and or angst later.

🤖

Patton also talks to Thomas like a person but more like "Yes look and my robot son he is so smart I love him" and he also teaches him puns. The puns get out of hand at some point and Thomas has got it in his neural network that puns are The Exact Right Thing To Say in Any social interaction but they start becoming really obscure because Thomas has access to a lot of information, and he hasn't quite nailed getting puns in context, so one time he makes a pun that is really sciencey and vaguely connected to the conversation so only Logan gets it,,,,, but he finds it hilarious and it's the only pun Logan will admit to laughing at.

🤖

Virgil has that programmer relationship with Thomas. So smthn just wont run correctly and Virgil is like "YOU IDIOT! I'm going to prohibit your mimicking human breathing function if you keep this up!!!" "A SINGLE SEMI COLON ARE YOU SERIOUS?!?! Why is it ALWAYS dumb s̶h̶i̶t̶ like that with you Thomas?!" "I have a million copies saved of his program because if anything happens to him I will actually combust." He also has incomprehensible names for variables and functions and stuff and some of them are memes and vine references. Logan has had to learn a bunch of modern slang just vaguely understand what's happening in the code.

🤖

Jan is always recommending certain things to Roman to make Thomas more realistic but sometimes they are obscure because "people and psychology are just weird" so Roman adds them in (or tries) but sometimes Janus just makes it up and watches everyone struggle meeting his request for entertainment. like, "Mhm, ok, fantastic work this week, truly, just show-stopping. However, comma, He just... doesn’t fix his hair enough... You'd be surprised the amount of times the average Male adult fixes his hair in a single social interaction. So....make him do it more." (That request never ended up getting changed back after it got implemented...)

🤖

Remus is always adding things to the list of "things he needs to test with" and Pat at reception starts to get concerned with the 3rd bulk shipment of deodorant that came through. Remus actually uses funds to restock the fridge and snack cabinet a lot along with Roman occasionally.

🤖

Pat is always scolding the others (mainly Remus and Virgil) for swearing or saying mean things too or around Thomas because he "wants to raise him right" and doesn't want him to "learn bad manners". He also may or may not be low-key emotionally attached to Thomas and wants to believe he actually feels things. Janus is simultaneously amused and frustrated with this but he let's it slide because "I guess that means that Thomas is effective...despite the fact that Patton is naive, it's still promising."

(Patton isn't actually naive, just because he wants to treat Thomas like a human doesn't mean he thinks he is. Patton really does it because then the others can be proud of their hard work and can actually see Thomas functioning with a person outside of a controlled environment.)

Yeah so that's what I got so far! I kinda wanna add more to this so if ya like the idea interact with this post n I'll maybe make an update. I don’t have a plot in mind for this other than like, Patton being added to the group. I just think the idea is cute and works well with the dynamics already set up in Sanders Sides.

Also, Disclaimer, I haven't had any experience in Robotics LOL so this could all be actual gibberish. I have done Computer Science and programming tho so I vaguely understand that side of it. But the engineering and actual possibility of making a human-like Robot I have no clue about.

Oh! If you know anything about these topics or maybe just like this au idea and want to add on FEEL FREE TO SHARE! :D I would LOVE to see what people have to add!

See yah~💖🤖💖~

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quantum-friend-theory · 7 years ago

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Noether’s Theorem - A Quick Explanation

Noether's Theorem is super rad. The theorem is, colloquially,

>> Continuous symmetries imply conserved quantities. <<

Let’s dig into the origin of this powerful theorem and list a couple of examples. I’ll restrict my attention to a subclass of symmetries for the sake of space, buuuut if there’s interest, I could do a more general post in the future. (Heads up: because this post is written using LaTeX, it's probably easiest to read directly from my blog.)

• Defining the Lingo: A Lagrangian is a function that (after some manipulation) yields the physical evolution of a system. A generic Lagrangian $L$ can be a real continuous function of...

$m$ real parameters $t_j$, where $j=1,\cdots,m$, and

$n$ pairs of paths, which we label $q_i(t_1,\cdots,t_m)$ and $\tilde{q}_i(t_1,\cdots,t_m)$, where $i=1,\cdots,n$ and a path means “a real continuous function of the aforementioned parameters”

In this exceedingly general case, we might write

$$L = L(q_1,\cdots,q_n,\tilde{q}_1,\cdots,\tilde{q}_n,t_1,\cdots, t_m)$$

However, for the sake of clarity, let's restrict ourselves to one parameter $t$ and one function pair $(q,\tilde{q})$. Let's further suppose $L$ depends on its parameter only through the function pair, aka let us write $L = L(q,\tilde{q})$ (as opposed to $L = L(q,\tilde{q},t)$). This is the case relevant to a classical particle confined to a friction-free line, wherein $q(t)$ is the particle’s position along the line and $t$ records the time.

While $L$ is constructed to be a function of position $q(t)$ and some other path $\tilde{q}(t)$, we always intend to eventually set $\tilde{q}(t)$ equal to the velocity $\dot{q}\equiv dq/dt$. Furthermore, of the many combinations $(q(t),\tilde{q}(t))$ equaling $(q(t),\dot{q}(t))$, nature chooses the pair satisfying the Euler-Lagrange equation:

$$\left.\frac{\partial L}{\partial q} \right|_{\tilde{q} = \dot{q}} = \frac{dp}{dt}$$

where

$$p\equiv \left. \frac{\partial L}{\partial \tilde{q}}\right|_{\tilde{q} = \dot{q}}$$

The differential equation we get from plugging a specific $L$ into the Euler-Lagrange equation is called the equation of motion of the system, and $p$ is the momentum conjugate to $q$.

• The Main Idea: No matter the specific form of $L$, we can plot it over $(q,\tilde{q})$ space. (To be clear: this is the space of values to which the paths $q(t)$ and $\tilde{q}(t)$ are mapping, so essentially the real plane.) The resulting plot will look something like the left plot in the following image:

I've made a point to highlight contours of constant $L$ in orange. The right plot projects those contours onto the $(q,\tilde{q})$ plane. These contours lie at the heart of Noether's Theorem: imagine we slide the coordinates $(q,\tilde{q})$ around in the plane so that each point moves continuously along a contour of constant $L$. Usually the shape of $L$ is changed when we distort the $(q,\tilde{q})$ plane below it, but by forcing each $(q,\tilde{q})$ to flow along a contour, $L$ is unaffected! A continuous transformation that leaves $L$ unchanged is called a continuous symmetry of the Lagrangian.

We can make this whole business quantitative by parameterizing the sliding operation with a real variable $\alpha$. Let's choose $\alpha$ so that $\alpha=0$ corresponds our initial unchanged $(q,\tilde{q})$ plane. Then the statement “$\alpha$ parameterizes contours of constant $L$” is mathematically expressible as

$$\left.\frac{dL}{d\alpha}\right|_{\alpha =0} =0$$

which equals, by the chain rule of differentiation,

$$\frac{\partial L}{\partial q}\hspace{3 pt}\left.\frac{dq}{d\alpha}\right|_{\alpha =0} + \frac{\partial L}{\partial \tilde{q}} \hspace{3 pt} \left.\frac{d\tilde{q}}{d\alpha}\right|_{\alpha =0} = 0$$

Now, this equation holds true across all of $(q,\tilde{q})$ space, including along the physical path solving the equations of motion. For that path, we may use the Euler-Lagrange equation, the definition of conjugate momentum $p\equiv \partial L/\partial\tilde{q}$, and the fact that $\partial \dot{q}/\partial \alpha = d/dt(\partial q/\partial \alpha)$ to write,

$$\frac{dp}{dt} \hspace{3 pt} \frac{\partial q}{\partial\alpha} + p \hspace{3 pt} \frac{d}{dt}\left[\frac{\partial q}{\partial \alpha}\right] = 0$$

aka, according to the product rule of differentiation,

$$ \frac{d}{dt}\left[p \hspace{3 pt} \frac{\partial q}{\partial \alpha}\right] =0 $$

In other words, the value of $p \hspace{3 pt} (\partial q/\partial \alpha)$ doesn’t change in time--it’s a conserved quantity! This is a special case of Noether's Theorem.

If we repeat the above calculation with $n$ paths $q_i(t)$, we instead derive

$$\text{*}\hspace{25 pt}\frac{d}{dt}\left[\vec{p}\cdot \frac{d\vec{q}}{d\alpha}\right] =0 \hspace{25 pt}\text{*}$$

where $\vec{q} \equiv (q_1,\cdots,q_n)$ and $\vec{p} \equiv (p_1,\cdots, p_n)$, and we find that

>> Momentum along a continuous symmetry direction is conserved. <<

This powerful statement allows us to identify conserved quantities from symmetries alone. For example...

• 1. Coordinate Translation Symmetry: Suppose $L$ doesn't depend on the coordinate $q_i$ for some value of $i$. Then the translation $q_i\mapsto q_i+\alpha$ is a continuous symmetry transformation. Because $dq_k/d\alpha$ is nonzero only for the coordinate we’re transforming ($k=i$), the associated conserved quantity is...

$$\vec{p}\cdot \frac{d \vec{q}}{d\alpha} = p_i$$

which is the $i$th conjugate momentum. And so, coordinate translation invariance necessarily implies conservation of the corresponding momentum.

• 2. Rotational Symmetry: Suppose $L$ depends on the coordinates $(x,y,z)$ and is invariant under the rotation of $x$ and $y$ into one-another:

$$ x\mapsto (\cos\alpha)x + (\sin\alpha)y\hspace{50 pt}y\mapsto (\cos\alpha)y -(\sin\alpha)x$$

Then we may calculate,

$$\left.\frac{d x}{d\alpha}\right|_{\alpha =0} = y\hspace{50 pt} \left.\frac{d y}{d\alpha}\right|_{\alpha =0} = -x$$

from which Noether's Theorem implies conservation of...

$$\vec{p}\cdot \frac{d\vec{q}}{dt} = p_x y - p_y x = - L_z$$

where $L_z$ is the angular momentum in the $z$-direction. Rotational invariance necessarily implies angular momentum conservation.

• Closing Comment: Note how we didn't need an explicit form for $L$ to make these arguments. Noether's Theorem tells us that conserved quantities naturally emerge not as coincidences, but from the presence of symmetries. Consequently, if I experimentally observe a conserved quantity (like electric charge, or color charge, or even things like lepton number) then I can make my model consistent with that observation by encoding certain symmetries into my Lagrangian. In this way, Noether’s Theorem is impressive in both its elegance and practical power.

Thanks for the ask, anonymous! I hope this helped. Although I didn't have space to discuss it here, Noether's Theorem also extends to Lagrangians with explicit parameter dependence, systems with multiple evolution parameters (like QFT), instances where $(q,\tilde{q})$ transformations change $L$ by a total derivative, and more. One extension allows us to demonstrate how time translation invariance yields energy conservation.

Have a physics question you think I might be able to help answer? Send me an ask. Until then, have a great day! Best wishes, my friend!

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painandinjury · 3 years ago

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Do You Burn the Same Amount of Calories Walking vs. Running?

If you ran one mile, would you have burned the same number of calories as if you had simply walked?

Intuition tells us that, for equal distances, running requires more energy than walking and therefore burns more calories. After all, running is a lot more sweaty and uncomfortable!

But …does it?

In order to find the answer, we need to define three important terms and understand how they are related.

The first is Energy. In physics, energy is the quantitative property that must be transferred to something physical in order to perform work on it, or to heat it. A less descriptive definition of energy is “the ability to do work.”

Visualizing energy is elusive, like an invisible force that can change into different forms, but most of the time the presence of energy can be visualized when the transfer occurs. For example, if you burn firewood, the invisible chemical energy in the wood is converted to heat energy, which you can see as fire. With regards to human movement, energy moves through our muscles, joints and bones.

The second is Work. Work is the energy transferred to or from an object via the application of force along a displacement (distance). In its simplest form, it is the product of force and displacement: W=F*d. So, think of work as “energy in action.”

Work and Energy have the same unit, called a Joule, which is the energy required to move 1 kg a velocity of 1 meter/second. So, when you walk one mile, your musculoskeletal system is performing work (W) by moving the weight of your body (F) over one mile (d). Weight is a force, as it is the mass of your body x gravity (acceleration).

The third is Calorie. In food science, one Calorie is the amount of heat needed to raise the temperature of 1 kilogram of water 1 degree Celsius; hence the phrase “burning” calories. Foods that we eat contain calories, which are represented by the energy stored in the bonds of the atoms of carbohydrates, fats and proteins. One gram of fat contains about 9 calories, while one gram of carbohydrate or protein contains about 4.

Calories are important to us because they are central to fat (not water) weight gain and loss. With the overabundance of high-calorie foods, weight loss is a concern for many. And along with calorie restriction (dieting), exercise is the means by which people try to lose weight. Exercise requires energy and work, which in the human body is sourced from calories. For those wanting to lose weight, the calories that are desired for burning are not in the food from a recent meal, but rather in the bonds of stored triglycerides; i.e. fat cells. Those unwanted fat cells are the result of the surplus of calories consumed (more than your body needed) over years and years.

People wanting to lose weight are interested in the best forms of exercise that will help them burn calories and use up those unwanted fat cells.

Before we address the original question of whether or not running one mile burns more calories than walking one mile, lets first discuss the two, main approaches to exercise: cardio and resistance.

Cardio exercises are exercises that result in sustained, increase heart rate. They are characterized by continuous movement of the body. Examples include running, walking, cycling, and the many types of aerobics classes such as cardio kickboxing. The continuous movement of your muscles in cardio exercises, when done for over 20 minutes burns fat and strengthens the heart muscle. A stronger heart is able to pump more blood to cells and increase cardiovascular endurance; hence the name.

Resistance exercises emphasize placing resistance on the large muscle groups, i.e. the legs, arms, back and core. They force the muscles to generate power, which burns calories just like cardio exercises. The resistance can be weights, resistance bands, or the weight of your body (squats, planks, pull ups, crunches).

This brings us to the calorie-burning effects of running vs. walking. Let’s say Tom, who has a mass of 50kg, walks one mile in 12 minutes, then runs a mile in 8 minutes. Did he burn the same amount of calories in both miles?

Since Work=Force x Displacement, the work Tom generated in both cases was as follows:

Force=mass x acceleration (of gravity on Earth, in this case) Force=50 kg x 9.80 m/s2 = 490.33 Newtons (the unit of force) Work=490.33 N x 1609.34 m = 789,107.68 Joules = 789.108 kJ

Since 1 calorie is approximately .239 J, Tom burned about 188 calories walking, and another 188 calories running because in both cases, he moved the same amount of force (his body weight) over the same distance…

THEORETICALLY.

The human body’s use of energy is not as easy to calculate compared to a machine. There are many variables in human movement; particularly in the way the muscles are used.

Let’s address the critical factor that will help us answer the original question – the biomechanics of walking vs. running. Do they use the same muscle groups in the same way? Do the muscles perform more work in one vs. the other given the same distance displaced? Is energy use the same in both?

I propose that energy expenditure in running is significantly higher than in walking, and here’s my argument.

If someone walks a mile in 12 minutes, then runs one in 8 minutes, it is conceivable that he burns the same amount of calories each time, because although running burns more calories per unit time (there is more muscle twitching with running), it is over a shorter time than walking. It is sensible that walking that extra four minutes makes up the balance.

Let’s make the comparison even closer: suppose Tom walked a mile in 12 minutes and “ran” the next mile in 12 minutes as well. This can be done at a certain threshold—the point (speed) where one can still walk fast or run at a light pace. It is best realized on a treadmill, because you do not change the treadmill speed but can either walk fast, or use a running movement. You’ll have to try it to know what I mean. For me, that threshold is 4 mph. I can switch between walking fast and running at a light pace. In this scenario, the times for completing both miles are equal (walking one mile in 12 minutes, then running one mile in 12 minutes), which makes the question of which burns more calories more interesting, and definitive.

Have you tried to figure out what specifically changes when you switch between walking fast and running? Lately, I’ve been speed walking a mile using a treadmill and running a mile, at the same pace, and tried to sense what was happening as I switched between the two.

Here’s what I discovered:

I immediately sensed that running made me breathe harder. An increased respiratory rate from exercise signifies a higher metabolic rate in the muscles (more glucose being used up in the citric acid cycle, which demands more oxygen).

Running felt harder to do than walking fast. This is evidence that I was expending more energy running than walking.

My strides were the same running vs. walking. In other words, I was not taking more frequent, shorter strides during running; they were about the same length.

I was bobbing up and down more during running. This was evident from my visual field—I noticed a significant increase in the vertical up and down movement of objects I focused on (the treadmill faced an open window, with trees in the distance). I estimated it to be about 2-3” every stride.

I sensed more muscle expenditure in my lower leg (calf) muscles and foot muscles when walking, compared to running.

I sensed more muscle expenditure in my upper leg (quadriceps) when running; i.e., stronger contraction in my legs compared to walking.

My conclusion is that, although fast walking and light running were done at the same speed, there were differences in the biomechanics of the movements. Unlike walking, running involves a subtle vertical push upwards, generated mainly by the quadriceps muscle starting at the heel strike phase (leg forward position, initiation of propulsion) through the mid stance to toe-off , that lifts the entire body up about 2-3 inches, compared to walking. This was evident even as I tried my best to stay level while running.

So, my theory is that running a mile burns more calories than walking a mile, and the extra work/ calorie burning in running comes from the stronger concentric contractions (meaning, more muscle fibers firing which uses more glucose) in the leg muscles to generate that extra vertical height against gravity PLUS the stronger isometric contraction that occurs when landing from that extra height, from heel strike to mid stance. So, switching to a running gait gives you a double whammy of calorie burning over walking, even when doing it at the same pace and over the same distance as walking.

Another way to look at it is potential energy. In physics, potential energy is the potential energy associated with gravity, which is released when the objects fall towards Earth. Hydroelectric power comes from the potential energy of water stacked high by a dam, and released at a lower level. The movement of water due to gravity is harnessed by the generator, which produces electricity. This is also a good example of how energy converts to different forms; from potential to mechanical to electrical.

Potential Energy = mass x gravity x height (above ground). When you run, because the biomechanics causes your whole mass to rise 2-3” higher than when walking, potential energy builds up and then releases, which travels through your muscles and bones as a force that needs to be dampened by muscle contraction (or you would collapse), which burns more calories.

So, if you were told that walking a certain distance burns the same amount of calories as running the same distance because of the formula W=F*d, where F and d values are the same in both cases, it’s likely not true. The faulty assumption here is that your body mechanics are the same when they are not. Running 3 miles feels you are doing more work because you are. Your heart rate is faster (this alone burns additional calories), your muscles and joints ache more, and your breathing rate is higher than if you walked the same distance. It’s all because with running, you are expending more energy elevating your body an extra 2-3” with each stride. This effort requires more calories in generating that lift, and absorbing it.

So yes, running is a great cardiovascular exercise to burn calories and lose weight. It does place more stress to your joints, so make sure you can handle this; otherwise, you are better off walking for exercise. But, you will need to walk a greater distance to burn as much calories as running, so it’s going to take you more time to lose weight with walking, compared to running.

If running is just too uncomfortable for you, try speed-walking because ultimately, any movement is better than none when it comes to staying fit and maintaining a healthy weight.

Nicola TL, Jewison DJ. The anatomy and biomechanics of running. Clin Sports Med. 2012

#Musculoskeletal disorders #Musculoskeletal pain #PainandInjuryDoctor #Doctor #Mucle Pain

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laceyspencer · 4 years ago

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Behavior Related to Taxation System: Example of Bi-Criteria Linear Program for Animal Diet Formulation-Juniper Publishers

Introduction

Animal diet formulation is a very important problem from an economic and environmental point of view, so it is an interesting example in the field of operations research. Many modern animal diet formulation methods tend to consider not only the cost of the diet but also excretions that are detrimental from an environmental point of view. Following [5], it is appropriate to apply a tax on excretions to change the behavior of the producers in the swine industry. These changes in behavior are studied using a formulation of the problem as a bi-criteria model and are obtained by the determination of its Pareto set. For linear models, the changes in behavior of the producer are abrupt (discrete) and correspond to specific values of the tax. In other words, even in increasing the tax it can happen that there is no change in the behavior of the producer. Behavior changes happened only at very specific values of the tax. We will see that these behaviors correspond to efficient extreme points of the Pareto set, and to every extreme point corresponds a tax interval so that any value of the tax in this interval leads to the behavior given by that same extreme point.

The outline of the paper is the following. In Section 2, we present the diet formulation problem considering the phosphorus excretion. The general form of the bi-criteria problem is presented, the geometric structure of its Pareto set is described, and we indicate methods to compute this set in Section 3. Finally, in Section 4, we present the pareto set for our original diet formulation problem and shows the effect of the taxation system on the behavior of a producer. The results presented in this paper, the behavior of the decision maker, can be applied to any linear bi-criteria problem.

Pig Diet Formulation

To illustrate the effect of a tax on the criteria, we consider the pig diet formulation problem considering not only the cost of the diet but also an environmental consideration such as the reduction phosphorus excretion [1]. One way to analyze this problem is to rewrite the problem as bicriteria problem. Hence the Pareto set indicates the effect of the reduction of phosphorus excretion on the cost of the diet. It also presents different behaviors for the producers associated to levels of taxation. This information is certainly useful for a decision maker which must choose a diet which decreases the excretion without being too expensive

Classical Model

The least cost diet problem, introduced in [2], is a classical linear programming problem [3-5]. A decision variable jx is assigned to each ingredient and represents the amount (in kg) of the thj ingredient per unit weight (1 kg) of the feed. Together, they form the decision vector

in our model. The model’s objective function is the diet cost. A vector of unit costs

must be minimized over the set of feasible diets denoted by S. The classic least cost animal diet formulation model is:

The constraints impose some bounds on the quantity of the different ingredients in the diet. For example, a unit of feed is produced (a 1 kg mix), expressed by the constraint

Some ingredients, or combinations of ingredients, can be imposed on the diet. These restrictions give rise to equality constraints (=) or inequality constraints (≥ or ≤). More specifically, to satisfy protein requirements, the following constraints are introduced for the L groups of amino acids contained in the ingredients. We set

where dig lj aa represents the amount of digestible amino acid l contained in a unit of ingredient j and bl*is the minimum amount of digestible amino acid l required. Finally, the diet must satisfy the digestible phosphorus requirements * bph given by

where dig j ph is the amount of digestible phosphorus contained in a unit of ingredient j .

Modelling of phosphorus excretion

Phosphorus excretion is directly related to the excess of phosphorus in the diet. Hence, we must establish the phosphorus content of the diet and consider the parts that is assimilated. The phosphorus content of a unit weight diet

of phosphorus which is digested. In this way the phosphorus excretion ( ) ph r x is given by the phosphorus content of the diet from which we remove the amount of phosphorus which is digested of phosphorus which is digested. In this way the phosphorus excretion ( ) ph r x is given by the phosphorus content of the diet from which we remove the amount of phosphorus which is digested

Hence, decreasing the phosphorus excretion ( ) ph r x is equivalent to decreasing the phosphorus content pr q xof the diet while maintained fixed the needs * ph b in phosphorus.

Bi-Criteria Problem: Cost and Phosphorus Excretion

Since we look for least cost diet while considering the phosphorus excretion, we have two conflicting criteria. The bicriteria linear model is then formulated as follows

For this problem, the Pareto curve will indicate the diet cost increase caused by a phosphorus excretion decrease. It will give us the taxation levels producing changes in the behavior of the producer.

Data

To illustrate the problem and the method we consider data that represent real situation [1]. The ingredients and their corresponding variables are described in (Table 1, Table 2) contains the entire model together with the values of the technical coefficients of the model.

General Bi-Criteria Linear Program and its Pareto Set

In this section we present the general formulation of a bicriteria linear problem, and the main results on its Pareto set. We use the link with the parametric analysis to get information on the system of taxation and behavior of the decision maker.

Bi-Criteria linear programming problem

Let us consider the standard form of the bi-criteria linear programming problem [6].

where x is a column vector in n  , and they ' ( 1, 2) k c s k = are row vectors in n  . The feasible set S in n  is defined by S = {x∈n | Ax = b and x ≥ 0} , where A is a (m, n)-matrix, and b are a column vector in n  . Let C be the (2, n)-matrix given by

The feasible set in the criterion space 2  is then { 2 | for } . C X S = z∈ z = C x∈S = CS It is well-known that S and SC are polyhedral sets in n  and 2  respectively. Throughout this paper we will suppose that the two criteria are lower bounded on S which means that for i = 1, 2 we have

Pareto set

A feasible solution x∈s is an efficient solution if and only if it does not exist any other feasible solution x∈S such that

for at least one j∈{1,2}. The set of all efficient solutions is called the efficiency set noted ε , also called Pareto set. The corresponding set in the criterion space is the set c ε = cε

Geometric structure of the pareto set

Under the assumption that the two cost vectors c1 and c2 are linearly independent, and using weighted sums, we can replace the bicriteria linear programming problem by a single criterion linear programming problem. We consider λ ∈[0,1] and the weightedsum function is

Hence the efficiency set ε in the decision space is a connected set and is the union of faces, edges and vertices of S . This set may be quite complex due to the high dimension of the decision space. On the other side c ε , which is the image in 2  of ε by a linear transform, is a much simpler set.

Since we have assumed that both criteria are lower bounded on S , it follows that c ε is a simple compact polygonal line. Indeed, in that case c ε is the union of a finite number L of segments [ ]

To each segment is associated a weight l 1,l λ − such that the vector 1, 1, (1 , )t l l l l λ λ − − − is orthogonal to the segment [ ] 1 , l l Q Q − in 2  . To each point Q of c ε is associated an interval Λ(Q) defined by

With 0 0,... . l λl −λ > for l = L More mathematical details are given in [7].

Link to parametric analysis

The parametric analysis is based on the weighted sum given by

for μ∈[0, +∞),which can represent a tax on the second criteria. The value function in this case is defined by

We could consider the single criteria problem for μ ≥ 0

Since λ and μ are related by the formulae

to the efficient extreme points { } 0 Q L l l= on the efficiency set ε c we associate to these extreme points the following intervals for the parameter μ

In many applications, the parameter μ is in fact a taxe over the the second criteria (for a minimization problem). Interesting enough is to observe that the behavior (extreme point) change only for the critical values μl−1,l of the parameter μ. Indeed when μ increases and its value passes through μl−1,l , the behavior moves from the extreme point 1 Ql− to the extreme point l Q . Moreover, any level of taxes μ strictly between the values 1, l l l μ μ − = and μl,l+1 = μl gives the same behavior described by the extreme point l Q .

Software

Several methods exist for computing the Pareto set of a bicriteria linear program, for example [7,8]. We have developed our own method which requires only elementary results from a linear program solver [9]. It has been programmed in MATLAB and uses Linprog as the linear program solver.

Back to Pig Diet Formulation: Cost and phosphorus excretion

Let us come back to our bi-criteria linear model

Its two associated parametric models are

Its Pareto curve contains all the information for optimal decision considering the level of taxation. (Table 3) presents the efficient extreme points in the criterion space while the Pareto curve is sketched in (Figure 1). For this problem, the algorithm detects L = 22 segments and 23 extreme points. A total of 45 calls to a linear program software was required [9].

For each l , such that l = 0, . . . , 22, the extreme point Ql is given by

and corresponds to the optimal value of the criteria corresponding to any optimal solution of , (p ( )) c ph μ for any values of μ in ( , ) l l μ μ . So, the value function, with tax, is

as long as [ , ] l μ∈ μ μl . So, we see that for any tax value in [ , ] l l μ μ we will always have the same value function ϕ(μ ) , or the same behavior (zl,cost , zl,phosphorus execretion), and the change in the behavior will append only when the taxation level μ passes through the extremities l μ or l μ of this interval.

This is a nice example of abrupt (discrete) changes in behavior depending on the level of taxation of one criterion.

Conclusion

We have considered a diet formulation problem with two conflicting criteria, modelled as a bi-criteria linear model, to illustrate abrupt changes in behavior of a decision maker for a taxation system.

Acknowledgment

This work has been supported in part by the Natural Sciences and Engineering Research Council of Canada (individual grant RGPIN-2016-05572) and by the Canadian corporation Swine Innovation Porch (project 1241).

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douchebagbrainwaves · 4 years ago

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INCLUDING, I HOPE, THE PROBLEM THAT HAS AFFLICTED SO MANY PREVIOUS COMMUNITIES: BEING RUINED BY GROWTH

But though I can't predict specific winners, I can offer a recipe for recognizing them. If you try too hard to conceal your rawness—by trying to reverse-engineer Winograd's SHRDLU.1 Grad school is the other end of a trade loses a dollar. After a while this filter will start to operate as you write. I know are professors, but it is the irreducible core of it, but thoughtful people aren't willing to use a forum with a lot of thoughtful people in it, and focus our efforts where they'll do the most good. I was writing this, my mind wandered: would it be useful to have an automatic book?2 Number one will be your own confidence in it. I told you so. Or perhaps the frontpage protects itself, by advertising what type of submission is expected. But only some of them will be a minority squared. An individual mine or factory owner could decide to install a steam engine, and within a few years he could probably find someone local to make him one.3

The Model T didn't have all the features previous cars did.4 I'm not saying spoken language always works best. And when my friend Trevor showed up at my house recently, he was carrying a Powerbook identical to mine.5 Apparently only recommendations really matter at the best schools. Never say we're passionate or our product is great.6 You meet a lot of trolls in it.7 On Demo Day each startup will only get ten minutes, so we were pretty excited when we figured out what seemed to us the optimal way of doing shopping searches. If you disagree, try living for a year using only the resources available to the average Frankish nobleman in 800, and report back to us. All previous revolutions have spread.

But will people pay for information otherwise? People who think the labor movement was the creation of wealth seems to appear and disappear like the noise of a fan as you switch on and off.8 At Rehearsal Day, we have a dress rehearsal called Rehearsal Day. Off, quiet. Wealth is defined democratically. The evolution of technology is captured by a monopoly, it will go to work for you without giving them options likely to be worth something. And if there are people getting rich by creating wealth. A free market interprets monopoly as damage and routes around it.9 It takes a conscious effort to remind oneself that the real world: they're small; you get to start from scratch; and the problem is usually artificial and predetermined.

Not because it's causing economic inequality, the former because founders own more stock, and the granary the wealth that each family created. But that isn't true.10 You can demonstrate your respect for one another in some way. And because startup founders work under great pressure, it's critical they be friends. But there will be more room for spikes. When we describe one as smart, it's shorthand for smarter than other three year olds.11 And yet half the people around you are out of their heads. Will people create wealth if they can't get paid for it. The most dangerous thing for the frontpage is stuff that's too easy to upvote.

Bad comments are like kudzu: they take over rapidly.12 People reply to dumb jokes with dumb jokes. Intelligence and wisdom are obviously not mutually exclusive. But the really striking change, as intelligence and wisdom too, but this predisposition is not itself intelligence. The information needed to conduct such studies is increasingly available. When people say something substantial that gets modded down, they stubbornly leave it up. You have to know what an n 2 algorithm is if you want to attract hackers to write software that will sell your hardware, you have to choose between several alternatives, there's an upper bound on your performance: choosing the best every time. I suppose that's worth something. I expect them to be written as thin enough skins that users can see the evolution of species because branches can converge.13 If you buy a custom-made car, something will always be breaking.14 It's pretty clear now that the things we build are so complicated, there's another rapidly growing subset: making things easier.

What a disaster that would be of the same curve. For most of us, it's not made equally. But that's like using a screwdriver to open bottles; what one really wants is a bottle opener. But it would be some kind of fundamental limit eventually. But the really striking change, as intelligence and wisdom too, but this predisposition is not itself intelligence.15 And from my friends who are professors I know what branch of the tree to bet on now.16 Do you, er, want a printout of yesterday's news? YC founders presenting at Demo Day, because Demo Day presentations are now so short that they rarely include much if any demo. Wise means something—that one is on average good at making the right decisions about language design. So it's kind of misleading to ask whether you'll be at home in computer science. But now that I've realized what's going on, perhaps there's a third option: to write something that sounds like spontaneous, informal speech, and deliver it that way too. And the way to ensure that is to ask what you need as a user.17

I'm sure most of those who want to decrease economic inequality. I say let's aim at the problems. They use different words, certainly. But only graduation rates, then you'll improve graduation rates.18 It's more important to grow fast or die. This was an era when small firms making everything from cars to candy were getting consolidated into a new kind of farming. Much of what's in the sage's head is also in the head of a 1950s auto executive, the attitude must have been dismayed when I jumped up to the whiteboard and launched into a presentation of our exciting new technology.

Notes

But if you do. The Roman commander specifically ordered that he had to for some reason insists that you should at least some of those you can send your business plan to make a fortune in the sort of pious crap you were doing more than the 50 minutes they may introduce startups they like to cluster together as much income. You could also degenerate from 129. This technique wouldn't work if the statistics they use; if there is one of them is that you'll expend a lot of face to face with the earlier stage startups, you may as well, partly because companies then were more at the fabulous Oren's Hummus.

Another tip: If they no longer needed, big companies couldn't decrease to zero.

Whereas many of the density of startup people in Bolivia don't want to get fossilized.

But a lot of the resulting sequence.

If the Mac was so violent that she decided never again.

The function goes asymptotic fairly quickly, because the money. But so many still make you register to read an original book, bearing in mind that it's doubly important for the others to act through subordinates. Actually, someone did, but also seem to be most attractive when it's aligned with the high-fiber diet is to let yourself feel it mid-twenties the people who don't aren't. Instead of no counterexamples, though.

The average B-17 pilot in World War II had disappeared.

Strictly speaking it's impossible without a time. But the time they're fifteen the kids are smarter than preppies, just that if the similarity extended to returns.

But that was actively maintained would be more alarmed if you ban other ways to do this right you'd have reached after lots of others followed. Maybe at first, and one didn't try to get fossilized. That's probably too much. Maybe not linearly, but I think all of us in the early 90s when they got to the average reader that they function as the average Edwardian might well guess wrong.

Please do not take the line? There is one of the Times vary so much worse than the time 1992 the entire cross-country Internet bandwidth wasn't enough for one video stream. 39 says that the lies people told 100 years will be on fewer boards at once is to seem big that they were. How many parents would still send their kids rather than just salary.

I grew up with only a few months by buying an additional disk drive. Seneca Ep.

I knew, there is money. Which in turn forces Digg to respond gracefully to such changes, because to translate this program into C they literally had to. They're an administrative convenience.

But if so, why did it with the Supreme Court's 1982 decision in Edgar v.

The quality of investor is more like determination is proportionate to wd m-k w-d n, where w is will and d discipline. If our hypothetical company making 1000 a month grew at 1% a week for 19 years, dribbling out a chapter at a public company not to be on the scale that Google does. So although it works well to show them how awful the real world is boring.

Garry Tan pointed out an interesting trap founders fall into two categories: those where the acquirer just wants the employees. Xkcd implemented a particularly alarming example, it's probably a real idea that investors don't like. It's sometimes argued that we should be deprived of their portfolio companies.

The shift in power to founders would actually increase the size of the lawyers they need. Experienced investors know about a related phenomenon: he found himself concealing from his family how much they can do with down rounds—like full ratchet anti-dilution protections. But it will seem more powerful version written in C and Perl.

If Paris is where your idea of happiness from many older societies. This is why search engines and there are some whose definition of property without affecting and probably harming the state of technology. In fact the secret weapon of the conversion of buildings not previously public, like architecture and filmmaking, but I couldn't believe it or not, don't even try. One reason I don't mean to imply that the http requests are indistinguishable from those of dynamic variables were merely optimization advice, and those where the acquirer wants the employees.

They assumed that their prices stabilize. Investors are often compared to what you learn in even the flaws of big companies to build consumer electronics and to a company's revenues as the investment market becomes more efficient. In a country with a neologism.

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christlovez · 7 years ago

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A Study in Skulls, Sonnets, and Chess

Ello! I am only a beginner at theorizing for Sherlock and I’ve yet to read the books (gotta read asap) but found great fun in brainstorming. Hopefully this isn’t all a repeat of what the fandom’s been saying for months now!

(This post will later on revolve a bit around the Extended Mind Palace theory and/or meditative trance theory)

Quick briefing for sonnets before i get into it: There are some fans who noticed that John’s counting on of 57 texts in The Scandal in Belgravia was a reference to William Shakespeare’s Sonnet 57.

Being your slave, what should I do but tend Upon the hours and times of your desire? I have no precious time at all to spend, Nor services to do, till you require. Nor dare I chide the world-without-end hour Whilst I, my sovereign, watch the clock for you, Nor think the bitterness of absence sour When you have bid your servant once adieu; Nor dare I question with my jealous thought Where you may be, or your affairs suppose, But, like a sad slave, stay and think of nought Save, where you are how happy you make those. So true a fool is love that in your will, Though you do any thing, he thinks no ill.

Modernized verison: “Since I’m your slave, what else should I do but wait on the hours, and for the times when you’ll want me? I don’t have any valuable time to spend, or any services to do, until you need me. Nor do I dare complain about how agonizingly long the hours are while I watch the clock for you, my king, or how bitter your absence is after you’ve said goodbye to your servant. Nor do I dare ask jealous questions about where you might be, or speculate about your affairs, but like a sad slave I sit still and think about nothing except how happy you’re making whomever you’re with. Love makes a person such a faithful fool that no matter what you do to satisfy your desires, he doesn’t think you’ve done anything wrong.”

Sonnet 58:

That god forbid, that made me first your slave, I should in thought control your times of pleasure, Or at your hand th' account of hours to crave, Being your vassal bound to stay your leisure. O let me suffer, being at your beck, Th' imprisoned absence of your liberty; And patience tame to sufferance bide each check, Without accusing you of injury. Be where you list, your charter is so strong That you yourself may privilege your time To what you will; to you it doth belong Yourself to pardon of self-doing crime. I am to wait, though waiting so be hell, Not blame your pleasure, be it ill or well.

“Sonnet 57 is one of 154 sonnets written by the English playwright and poet William Shakespeare. It is a member of the Fair Youth sequence, in which the poet expresses his love towards a young man. Sonnet 57 is connected with Sonnet 58 which pursues the theme of the poet as a slave of the beloved.” - Wikipedia

Modernized version: ”Whatever god decided to make me your slave, may he never allow me to so much as think about having any control over when you see me, or asking you to account for how you’ve been passing the hours. I’m your slave, after all, and forced to wait until you have time for me. Oh, while I wait for your summons, let me suffer patiently the prison of this lengthy absence from you as you do whatever you want. And let me control my impatience and quietly endure each disappointment without accusing you of hurting me. Go wherever you want—you’re so privileged that you may decide to do whatever you like. You have the right to pardon yourself for any crime you commit. And I have to wait, even if it feels like hell, and not blame you for following your desire, whether it’s for good or bad.“

Sonnet 59:

Mary is said to have called/messaged John 59 times in The Six Thatchers because she’s going into labor.

John says this number, ‘59.‘

If there be nothing new, but that which is Hath been before, how are our brains beguil'd, Which, labouring for invention, bear amiss The second burthen of a former child! O, that record could with a backward look, Even of five hundred courses of the sun, Show me your image in some antique book, Since mind at first in character was done! That I might see what the old world could say To this composed wonder of your frame; Whether we are mended, or whe'r better they, Or whether revolution be the same. O! sure I am, the wits of former days To subjects worse have given admiring praise.

Modernized version: “If it’s true that there’s nothing new and everything that now exists existed in the past, then we are really fooling ourselves when we struggle to write something new, winding up, after much exhausting, painful labor, with a tired imitation of an imitation! If only I could look back into the records, even as far as five hundred years ago, and find a description of you in some old book, written when people were just beginning to put their thoughts in writing, so I could see what the old world would say about your amazingly beautiful body. Then I could see whether we’ve gotten better at writing or worse, or whether things have stayed the same as the world revolves. Oh, I’m sure the witty writers of the past have devoted praise and admiration to worse subjects than you.“

Sherlock in The Six Thatchers, explains to Mary that he knows 58 possible ways of diminishing variables and calculating the steps she would take. (despite the fact that he did not use this tactic to find her location after she fled to lure Ajay away. Tracer device n’ all) This mention of 58 comes after the mention of 59, which is also mentioned in The Six Thatchers episode.

Sonnet 59 is also connected to a picture seen in The Abominable Bride. The skull painting of the modern Sherlock world is blue with a rather simple plain background. In Sherlock’s mind palace, the painting is red and is a Victorian painting called All is Vanity. All is Vanity in real life is typically a more neutral brown than the reddish brown we see, and sometimes white. (The fabulous @cyntrix-gm helped me find this painting’s name)

Both the painting, and sonnet 59 refer to verses in the bible from the same book of Ecclesiastes.

(Sonnet 59) If there be nothing new: Ecclesiastes 1.9: "The thing that hath been is that which shall be; and that which hath been done is that which shall be done; and there is no new thing under the sun."

In Scandal in Belgravia, Sherlock says, “The wheel turns, nothing is ever new.“ and Mycroft in The Sign of Three in Sherlock’s mind palace reminds, “What do we say about coincidence?” Sherlock responds “The universe is rarely so lazy.”

All is Vanity: Ecclesiastes 1:2 “Vanity of vanities, saith the Preacher, vanity of vanities; all is vanity.“

John’s Chinese fortune cookie says “There is nothing new under the sun. It has all been done before.” (credited post by @teaandforeshadowing)

This post by @lillabaloo displays a screenshot in which thewatsonbeekeepers explains that William Sherlock Scott Holmes’s real initials (WH) are connected in parallel to whom sonnets are addressed to.

His Last Vow had a deleted scene featuring Magnussen and a hospitalized Sherlock where a vase with a dark, withering rose and letter stood.

(@cyntrix-gm found the rose symbolism) The symbolism of the withering rose:

“The dark crimson rose has a meaning that has two sides. On one side it’s about sadness and mourning and death. On another, it has a more joyous meaning - rebirth and love. When someone you care about passes away, the dark crimson rose can express your feelings of mourning and sadness.” - website of Auntyflo on rose symbolism.

Magnussen - “The struggling carnations are from Scotland Yard. The single rose is from.. ‘W’.. And the black wreaths? C-block Pentonville (prison). I’m not sure the intent was entirely kindly.”

(Fun fact: White carnations = pure love, good luck. Black wreaths = death. Many more shades of carnations appear in the scene, though white is the most common, next to pink. The pink carnation was said to have appeared because of the Virgin Mary’s tears, a symbol of a mother’s undying love- it’s no wonder it’s a Mother’s Day flower meant to say “I will never forget you“. It also is a flower of support. [Info from: Teleflora ... and Google])

Flip the letter upside down and increase contrast levels:

Invert the colors:

A chess piece with a skull on it and something that can be described as a lock(?) above it. The letter W has turned into a perfect blue M.

(Blue and red in the series has been used as a way to imply inverse or alterations, especially when it comes to Sherlock’s poster, and sometimes locations within his mind palace. Curtains within John’s home [or therapist’s office?..that office changes a lot too, to be honest,] in season 4 turn red, when before they had been blue.)

Mary in the Abominable Bride opens a letter from Mycroft saying, “Immediately.” It’s from Mycroft because later, as she sneaks with Sherlock and John to catch the Emelia Ricoletti culprits, she admits that she works with Mycroft and that he summoned her.

A rose and letter from Mycroft after Sherlock is stabbed by Rosamund/Mary? Interesting.

In the modern letter it’s hard to tell whether the chess piece is a standard queen or bishop piece.

This brings us back to the controversy surrounding season 4 promotional pictures, which apparently were copyrighted and declared as ‘leaks’, because they reveal important spoiler information.

It’s not quite known what the spoiler is, but the implication is enough for mystery.

In this picture, we see two bishops upended along with pawns, flying towards the camera.

“The bishop’s predecessor in medieval chess, shatranj (originally chaturanga), was the alfil, meaning “elephant”, which could leap two squares along any diagonal, and could jump over an intervening piece.” - Wikipedia

We can now say that the letter’s chess piece is most likely a bishop, as it very well references to a reoccurring symbol: The elephant [in the room].

Symbolically or literally an elephant has been hidden in rooms, for example on Mrs. Hudson as a necklace, in the back of the 221B room, and within John’s blog and Sherlock’s best man speech using The Elephant in the Room as a good tale. The symbol can refer to an obvious issue that John and Sherlock choose to ignore, perhaps their feelings towards each other (if you’re a johnlocker).

If you want to further analyze, the remaining pieces standing on the board is two opposing knights, with Mycroft’s king and his two pawns.

Knights: “Colloquially it is sometimes referred to as a "horse", which is also the translation of the piece's name in several languages. Some languages refer to it as the "jumper", reflecting the knight's ability to move over pieces in its way.“ - Wikipedia

John may be the “jumper”, as Sherlock does refer to John’s jumpers an episode before, in The Sign of Three, when trying to deduce who is the next target of the Mayfly man. If the chess pieces are symbols of people, who if not John would be the knight? John’s presence in this picture raises slight question.

With all this comes the question of: who is Mycroft’s knight? And why do John and Mycroft’s knight oppose one another?

Most of Sherlock’s chess pieces are strewn on the table in front of Mycroft, and Mycroft’s pieces across Sherlock’s side of the table.

Sherlock is either unable to beat his own brother (so close to checkmate), or he’s passing the game onto us in this picture.

Mycroft throughout the series has subtexted queen status.

John at Buckingham Palace, “Are we here to meet the Queen?”

Sherlock - “Apparently”

A painting of the young Queen Elizabeth II, “Queen Regent” by Pietro Annigoni in 1954, hangs behind Mycroft in his office. It’s the only wall decorative in this Sherrinfordian office.

Moriarty’s stealing of the crown jewels could be a reference to gaining control over Mycroft, perhaps through blackmail. We know they communicated inside and outside of Sherlock’s mind palace, at least.

Irene - “Jim Moriarty sends his love.”

Mycroft - “Yes, he’s been in touch. Seems desperate for my attention, which I’m sure can be arranged.”

“And honey, you should see me in a crown.” - Moriarty.

This symbolizes a lot that I’m unsure of. He breaks down a glass wall after writing “Get Sherlock” on it, which I suppose means his barriers keeping him back are no longer there, and he can now become queen. We still don’t know what Irene told him in the beginning of A Scandal in Belgravia, and what could have possibly kept him from killing John and Sherlock at the pool (unless someone does know, please hit me up!)

In the end, Mycroft holds the power of the British government. There’s no explanation for how, besides that Magnussen also held a lot of power and it was through blackmail.

But regardless, Mycroft is most likely queen on the chess board.

Back to the letter W/M in Sherlock’s hospital room, the W/M stands for someone/something.

It’s easier to assume it’s an M, with the chess piece insignia as reference for which way to read the seal. If it is M, and the one Sherlock plays chess/games against is Mycroft and Moriarty, especially as Moriarty in S4 is shown to have worked with him, and oddly has also had a connection with Mary Morstan before John and her ever met.. it can be safe to assume M stands for Mycroft.

Another idea of who it is could be Mary. She did visit Sherlock in the hospital, possibly as one of the first visitors. A rose very well mirrors her true name, Rosamund, as does the wallpaper behind Sherlock when she shot him.

Though this is an overly prepared and symbolic way of giving a ‘ get well’ or ‘don’t tell john’ letter. (If you believe the Extended Mind Palace theory starting from the reversed heart monitor in HLV, this can also mean M is still working behind the scenes while Sherlock is incapacitated)

S4′s connection of all the people who ever pulled the strings of Sherlock’s heart and gave him trouble, find their place and connection to Sherrinford or through Mycroft, the one supposed to be in control of Sherrinford.

Or it may not be so complicated. It may simply be Moriarty’s last goodbye, but if so, who placed the letter and rose there?

Rewind to the skulls.

So many skulls.

Sherlock’s skull poster seems to always remain blue before The Abominable Bride (Correct me if I’m wrong please):

Alas, poor Victor.

Odd glass-ish ball on Mycroft’s desk possibly resembles a skull at certain angles.

Perfectly normal, unusually well-lit poster here.

Stop laughing at me, Mr. Skull. You’ve gone purple, and I’ve never heard of a pirate having a purple flag.

Blue, the shade of TD-12, Mary’s death scene, and lies. Fascinatingly vague information.

Skull picture is blacked out in TLD, while Sherlock is with Culverton at the hospital. Which brings me to realize..

If Sherlock is unconscious, who’s manning the mind palace?

Is him being unconscious in the hospital bed a thing of consciousness awareness? He may still be in the hospital outside of mind palace, after all.

John is often wearing colors that match the Mind Palace skull paintings. John seemed to be subtextually connected with Sherlock’s skulls since the beginning of A Study in Pink where John says about the mantelpiece’s skull, “So I’m a replacement for your skull?” and Sherlock says, “Don’t worry, you’re doing fine.” Sherlock upon John’s first seeing the skull claims that it’s his ‘friend’ of a sort. In Sherlock’s mind palace, after HLV, John may be even more connected to the skulls.

The skull poster is also symmetrically aligned with John’s chair, just as the shifty orange lamp and smiley face is aligned with Sherlock’s chair. The room is rather deliberately a half-n-half of John and Sherlock, John’s side being more green, and Sherlock’s being more beige.

In narration, it always seems to matter who’s sitting on the right or left side of the flat. Clients must sit in the middle while John and Sherlock sit in their respected spots. Moriarty chooses to sit in John’s seat as an act of domination over their balance of things, which can lead us to assume that Sherlock offering his own chair is in an ode of respect towards John rather than Moriarty. Which leads me to believe the placement of the skull poster (and smiley face), is even more correlated with John’s place in the Mind Palace.

During Mary’s frankly unreal monologue at the end of The Final Problem, we see the skull picture again, purple/gray and appearing very dark, digital and coded. It’s a sign that things aren’t finish yet.

I may edit this bit later if I notice anything else.

Interesting post regarding the skull poster by @the-7-percent-solution

(to those tagged, please let me know if you want me to uncredit!)

(Gradually migrating Sherlock posts from this blog to @all-is-v-57)

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online-qualityassignmenthelp · 5 years ago

Text

Risk and Return Assignments Help

New Post has been published on https://qualityassignmenthelp.com/risk-and-return-assignments-help/

Risk and Return Assignments Help

Risk and return is considered most important topic in finance and investment. The first thing that need to understand in this topic is return income. Income received on an investment plus any change in market price is known as return income. This is the formula of return income.

Where D1 = Dividend

Pt = original price

Pt-1 = Current price

Let’s suppose if a have security original price is $ 100 and the current price is $110. The dividend received on the stock is $ 2. An investor calculates return income through the following procedure.

D1 = Dividend = 2

Pt = original price = 100

Pt-1 = Current price = 110

Put all values in formula

For instance, the important thing is return income is always in a percentage form.

Let’s if a security current trading price is $ 96 and its original price is $100. The dividend received on a stock is $ 4. Calculate the return income of that particular security.

D1 = Dividend = 4

Pt = original price = 100

Pt-1 = Current price = 96

Put all values in formula

Risk:

A finance expert defines risk as the variance among the actual and expected return. In simple words, the risk is uncertainty about the future. For example, there are two securities Omega and Nike. The expected returns on Omega and Nike as follows.

Omega Nike

10% 6%

16% 5%

8% 7%

6% 5%

18% 7%

Above all, the risk probability is higher in Omega security. Because there are more variations in Omega.

Probability:

Occurrence chance of any event or chance of happening is called probability. Occurrence is the basic outcome of an experiment. For example, if we toss a coin there are two occurrences, and if we throw a die there should be six occurrences.

Probability Distribution:

It is a statistical function that defines all probable values and chances that a random variable can take within a given range. In simple words, the Chances of random variables is called probability distribution.

For example

10%

40%

20%

Expected return:

The weighted average of possible returns, with weights being the probabilities occurrence is called expected return. The formula of expected return is as follows

Expected return = Possible return × Probabilities

Here we assume some possible returns and probabilities and try to calculate expected returns.

Possible Returns Probabilities = Ṝ

10% 0.40 = 0.04

5% 0.40 = 0.02

11% 0.20 = 0.022

0.082

So, there is an 8.2% expected return.

Standard Deviation:

It is a static measure of the variability of distribution around its mean. It is the square root of the variance. Therefore, we find standard deviation with the help of this formula.

Co-efficient of Variance:

It is a statistical measure of the dispersion of the points around the mean. The co-efficient of variance determines the risk involved in a single expected unit. In other words, it is measure relative risk. We calculated the coefficient of variance in the following ways.

Certainty equivalent:

The amount of cash or equivalent somebody would require. The inevitability at a point in time to make individual indifferent between that certain amount. The expected amount is to be received with risk at the same point in time.

Risk-averse:

The term risk averse applied on an investor who requires might be a lower expected return, bearing with lower risk. In vice versa, if investor bears high risk than he should also demand for high return. This also follows an investment rule of thumb, “high risk and high profit”.

Portfolio:

A combination of different securities is called a portfolio. From a finance point of view, a combination of securities means a combination of assets, securities, bonds, etc. Investors construct portfolios according to their risk tolerance and investing objectives. Therefore, a portfolio is like a pie which is further divided into different size and nature of pieces.

Single Security Return calculate =

E(R) = R Pr. + R Pr. + R Pr.

E (R) = M∑ RjPr.j

Where = (E) R = expected return

R Pr. = Return probability

Portfolio return calculate =

E(Rp) = Wa(E)Ra + WBE(R)b + WcE(Rc) + WdE(Rd)

E (Rp) = n∑ Wi E (Ri)

Where:

E(Rp) = Expected return of portfolio

W = weight of security

Types of risk:

As we already discussed above that risk is uncertainty about the future. Generally, there are two types of risk considers in finance.

Systematic risk:

It is part of the total risk that is cause by different factors. These factors are not in the control to any specific individual, and a company. This is cause by external factors and not controllable for a firm. This risk exists on all assets, stocks, and securities. As a result, we call them non-diversified risk. It is not possible to eliminate this risk through efficient diversification of a portfolio. The common example of systematic risk is changes in tax laws, market risk, purchasing power risk, exchange rate risk, natural disasters, and security situations, etc.

Unsystematic risk:

The systematic risk is also known as diversified risk. It is the risk of a specific firm, industry. This risk can be eliminated through the efficient use of resources, better management, and diversification of a portfolio. For example one of the prestigious textile organization is working as usual. But suddenly due to some misunderstandings, or something else, the staff go to strike. Now, this is an unplanned risk, happen suddenly and also causes widespread disruption. The stock prices of this textile organization should fall due to this strike. But still, this is controllable through dialogue and well handling. So, we may call this risk as unsystematic risk.

Diversification:

Diversification is the process to manage investment in a well-organized way. Invest in different sectors instead of anyone to eliminate and minimize the risk. In diversification, an investor invests in different sectors with different weights.

Capital asset pricing model (CAPM):

The capital asset pricing model is the relationship between expected risk and expected return based on the market beta. CAPM shows that the expected return on a stock. In addition, expected return is the combination of risk-free return risk premium. The risk premium is based on the beta of that stock. The formula of CAPM is given below.

Ra = Rf + [× (Rm – Rrf)]

Where:

Ra = Expected return on a stock

Rf = Risk-free rate

Ba = Beta of security

Rm = Expected market return

Risk Premium = Rm – Rf

Question No. 1:

Use capital asset pricing model (CAPM) to estimate the expected return for the shares of

(i) your case company Nick Scali (NCK)

(ii) a hypothetical company with a beta of 1.60. When calculating, use the yield to maturity of a 10-year Australian Government bond on 1 April 2020 as a proxy for the risk-free rate (RF), suppose the market risk premium is 5.50% and use your case company’s most recent 5-year beta.

(iii) Using the data from part (ii). Estimate portfolio expected return and beta. Assuming a portfolio with 70% invested in your case company. The remainder invested in the hypothetical company

Unlock free of cost solution of this question on quality assignment help sample page click here

Question No. 2:

(a) Friedman Manufacturing, Inc. has prepared the following information regarding two investments under consideration. Which investment is better, based on risk (as measured by the standard deviation) and return?

(b) “ More can be said about risk, especially as to its nature, when we own more than one asset in our investment portfolio.” Define risk and explain how risk is affected if we diversify our investment by holding a variety of securities?

Unlock free of cost solution of this question on quality assignment help sample page click here

If you still have any confusion regarding any financial help, please don’t hesitate to contact us. Quality assignment help experts are ready to help you. Click here

#Finance assignments help #Finance Dissertation help #Finance-Homework help #Fundamental finance help #Portfolio Management Assignment Help #Quality assignments help #Assignment #Finance Homework Help

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sackface93 · 6 years ago

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Stone-walling low-carbohydrate diets. Attack of the self-proclaimed ICQC

The attack was quite sudden although it appeared to have been planned for many years. The paper was published last week (Augustin LS, Kendall CW, Jenkins DJ, Willett WC, Astrup A, Barclay AW, Bjorck I, Brand-Miller JC, Brighenti F, Buyken AE et al: Glycemic index, glycemic load and glycemic response: An International Scientific Consensus Summit from the International Carbohydrate Quality Consortium (ICQC). Nutr Metab Cardiovasc Dis 2015, 25(9):795-815.

As indicated by the title, responsibility was taken by the self-proclaimed ICQC. It turned out to be a continuation of the long-standing attempt to use the glycemic index to co-opt the obvious benefits in control of the glucose-insulin axis while simultaneously attacking real low-carbohydrate diets. The authors participated in training in Stresa, Italy.

The operation was largely passive aggressive. While admitting the importance of dietary carbohydrate in controlling post-prandial glycemic, low-carbohydrate diets were ignored. Well, not exactly. The authors actually had a strong attack. The Abstract of the paper said (my emphasis):

“Background and aims: The positive and negative health effects of dietary carbohydrates are of interest to both researchers and consumers.”

Methods: International experts on carbohydrate research held a scientific summit in Stresa, Italy, in June 2013 to discuss controversies surrounding the utility of the glycemic index (GI), glycemic load (GL) and glycemic response (GR).”

So, for the record, the paper is about dietary carbohydrate and about controversies.

The Results in Augustin, et al were simply

“The outcome was a scientific consensus statement which recognized the importance of postprandial glycemia in overall health, and the GI as a valid and reproducible method of classifying carbohydrate foods for this purpose…. Diets of low GI and GL were considered particularly important in individuals with insulin resistance.”

A definition is always a reproducible way of classifying things, and the conclusion is not controversial: glycemia is important. Low-GI diets are a weak form of low-carbohydrate diet and they are frequently described as a politically correct form of carbohydrate restriction. It is at least a subset of carbohydrate restriction and one of the “controversies” cited in the Abstract is sensibly whether it is better or worse than total carbohydrate restriction. Astoundingly, this part of the controversy was ignored by the authors. Our recent review of carbohydrate restriction in diabetes had this comparison:

A question of research integrity.

It is considered normal scientific protocol that, in a scientific field, especially one that is controversial, that you consider and cite alternative or competing points of view. So how do the authors see low-carbohydrate diets fitting in? If you search the pdf of Augustin, et al on “low-carbohydrate” or “low carbohydrate,” there are only two in the text:

“Very low carbohydrate-high protein diets also have beneficial effects on weight control and some cardiovascular risk factors (not LDL-cholesterol) in the short term, but are associated with increased mortality in long term cohort studies [156],”

and

“The lowest level of postprandial glycemia is achieved using very low carbohydrate-high protein diets, but these cannot be recommended for long term use.”

There are no references for the second statement but very low carbohydrate diets can be and frequently are recommended for long term use and have good results. I am not aware of “increased mortality in long term cohort studies” as in the first statement. In fact, low-carbohydrate diets are frequently criticized for not being subjected to long-term studies. So it was important to check out the studie(s) in reference 156:

[156] Pagona L, Sven S, Marie L, Dimitrios T, Hans-Olov A, Elisabete W. Low carbohydrate-high protein diet and incidence of cardiovascular diseases in Swedish women: prospective cohort study. BMJ 2012;344.

Documenting increased mortality.

The paper is not about mortality but rather about cardiovascular disease and, oddly, the authors are listed by their first names. (Actual reference: Lagiou P, Sandin S, Lof M, Trichopoulos D, Adami HO, Weiderpass E: …. BMJ 2012, 344:e4026). This minor error probably reflects the close-knit “old boys” circle that functions on a first name basis although it may also indicate that the reference was not actually read so it was not discovered what the reference was really about.

Anyway, even though it is about cardiovascular disease, it is worth checking out. Who wants increased risk of anything. So what does Lagiou, et al say?

The Abstract of Lagiou says (my emphasis) “Main outcome measures: Association of incident cardiovascular diseases … with decreasing carbohydrate intake (in tenths), increasing protein intake (in tenths), and an additive combination of these variables (low carbohydrate-high protein score, from 2 to 20), adjusted for intake of energy, intake of saturated and unsaturated fat, and several non-dietary variables.”

Low-carbohydrate score? There were no low-carbohydrate diets. There were no diets at all. This was an analysis of “43, 396 Swedish women, aged 30-49 years at baseline, [who] completed an extensive dietary questionnaire and were followed-up for an average of 15.7 years.” The outcome variable, however, was only the “score” which the authors made up and which, as you might guess, was not seen and certainly not approved, by anybody with actual experience with low-carbohydrate diets. And, it turns out that “Among the women studied, carbohydrate intake at the low extreme of the distribution was higher and protein intake at the high extreme of the distribution was lower than the respective intakes prescribed by many weight control diets.” (In social media, this is called “face-palm”).

Whatever the method, though, I wanted to know how bad it was? The 12 years or so that I have been continuously on a low-carbohydrate diet might be considered pretty long term. What is my risk of CVD?

“Results: A one tenth decrease in carbohydrate intake or increase in protein intake or a 2 unit increase in the low carbohydrate-high protein score were all statistically significantly associated with increasing incidence of cardiovascular disease overall (n=1270)—incidence rate ratio estimates 1.04 (95% confidence interval 1.00 to 1.08), 1.04 (1.02 to 1.06), and 1.05 (1.02 to 1.08).”

Rate ratio 1.04? And that’s an estimate. That’s odds of 51:49. That’s what I am supposed to be worried about. But that’s the relative risk. What about the absolute risk? There were 43 396 women in the study with 1270 incidents, or 2.9 % incidence overall. So the absolute difference is about 1.48-1.42% = 0.06 % or less than 1/10 of 1 %.

Can such low numbers be meaningful? The usual answers is that if we scale them up to the whole population, we will save thousands of lives. Can we do that? Well, you can if the data are strong, that is, if we are really sure of the reliability of the independent variable. The relative risk in the Salk vaccine polio trial, for example, was in this ballpark but scaling up obviously paid off. In the Salk vaccine trial, however, we knew who got the vaccine and who didn’t. In distinction, food questionnaire’s have a bad reputation. Here is Lagiou’s description (you don’t really have to read this):

“We estimated the energy adjusted intakes of protein and carbohydrates for each woman, using the ‘residual method.’ This method allows evaluation of the “effect” of an energy generating nutrient, controlling for the energy generated by this nutrient, by using a simple regression of that nutrient on energy intake.…” and so on. I am not sure what it means but it certainly sounds like an estimate. So is the data itself any good? Well,

“After controlling for energy intake, however, distinguishing the effects of a specific energy generating nutrient is all but impossible, as a decrease in the intake of one is unavoidably linked to an increase in the intake of one or several of the others. Nevertheless, in this context, a low carbohydrate-high protein score allows the assessment of most low carbohydrate diets, which are generally high protein diets, because it integrates opposite changes of two nutrients with equivalent energy values.”

And “The long interval between exposure and outcome is a source of concern, because certain participants may change their dietary habits during the intervening period.”

Translation: we don’t really know what we did here.

In the end, Lagiou, et al admit “Our results do not answer questions concerning possible beneficial short term effects of low carbohydrate or high protein diets in the control of body weight or insulin resistance. Instead, they draw attention to the potential for considerable adverse effects on cardiovascular health of these diets….” Instead? I thought insulin resistance has an effect on CVD but if less than 1/10 of 1 % is “considerable adverse effects” what would something “almost zero” be.?

Coming back to the original paper by Augustin, et al, what about the comparison between low-GI diets and low-carbohydrate diets. The comparison in the figure above comes from Eric Westman’s lab. What do they have to say about that?

They missed this paper. Note: a comment I received suggested that I should have searched on “Eric” instead of “Westman.” Ha.

Overall, this is the evidence used by ICQC to tell you that low-carbohydrate diets would kill you. In the end, Augustin, et al is a hatchet-job, citing a meaningless paper at random. It is hard to understand why the journal took it. I will ask the editors to retract it.

Source: https://feinmantheother.com/2015/12/01/stone-walling-low-carbohydrate-diets-attack-of-the-self-proclaimed-icqc/

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fredvincent765-blog · 7 years ago

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CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

Assignment 1 consists of five tasks. For each task, you have to submit a .cpp file and a documentation file. The .cpp file should have the program code and short comments (one line or two) about the algorithm and the coding. We may compile the .cpp files using MinGW 4.7.1 if required. The documentation files should contain the compilation messages and sample runs for each program. All files must be in pure text format. No PDF, HTML, Word files, Open Office files, RTF etc. You will submit a single ZIP file (not RAR) which has all the files for your assignment (the .cpp files and the documentation files).

If you are using Codelite, the compilation messages can be copied and pasted with the usual crtl-c and crtl-v. For output of sample runs, right click the title bar of the command window, select EDIT/MARK and then highlight the output. With the output selected, right click the title bar of the command window, select EDIT/COPY. Position your cursor to a (new) text file opened in a text editor such as Notepad, and crtl-v will paste the copied output to the text file.

If you are using MinGW, right click the title bar of the command window; select EDIT/MARK and then high light the output. With the output selected, right click the title bar of the command window, select EDIT/COPY. Position your cursor to a (new) text file opened in a text editor such as Notepad, and crtl-v will paste the copied output to the text file.

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

We can pass parameters by value or by reference. There is a third way, by pointer (reference) which works in a similar fashion as passing by reference. When passed by value, a copy is passed and the original data is not changed by the function call. Passing by pointer / reference allows the called function to modify the original value of the variable passed. Sample_passing.cpp illustrates the cases. See textbook chapter 7, section 7.1 to 7.3 for more details.

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

C++ provides a date-time library <ctime> for handling date-time. You can get the system date-time using the library function time() which returns the current calendar time. We can break down the calendar time to different date-time components using localtime() which returns local date-time information in a date-time structure.

Date-time structure:

struct tm

int tm_sec // seconds; 0-59 int tm_min // minutes; 0-59 int tm_hour // hour of the day; 0-23 int tm_mday // day of month; 1-31 int tm_mon // month since January; 0-11 int tm_year // year since 1900; int tm_wday // day of week; 0-6 (Sun, … Sat) int tm_yday // day since 1 January; 0-365 int tm_isdst // daylight saving status; // > 0 if operational; // == 0 not operational; // < 0 no information available.

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Option Returned value Range of returned value a Abbreviated weekday Thu A Full weekday Thursday b Abbreviated month Aug B Full month name August c Local date and time Thu Aug 23 13:33:02 2017 d Day of month 01-31 H Hour 00-23 I Hour 01-12 j Day of the year 001-366 m Month 01-12 M Minute 00-59 p AM or PM PM S Second 00-59 U U week number of the year; 00-53 Sunday as first day of week w Weekday 0-6, Sunday is 0 W Week number of the year; 00-53 Monday as first day of week x Local date representation 02/23/17 X Local time representation 14:45:02 y Year without century 00-99 Y Year with century 2017 Z Time zone (100 = 1 hour) +100

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

We can also create a date-time structure using our own year, day, month, hour, minute and second information. Before we can use it as a valid date-time structure, we have to call mktime() to adjust other members of the date-time structure to make it valid. Sample_time_B.cpp illustrates the use of the library functions to specify a time

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

The services charges $2.00 for the first 2 kilometre of travel (even if you are under 2 kilometers). After the first 2 kilometers the services charges $0.50 cents for each additional kilometer up to additional 6 kilometers. After those 6 kilometers the customer is charged a $1.00 for each additional kilometers

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

User will be able to enter names with multiple words. Your code should be able to capture names consisting of any number of words (hundreds, at least). You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_1.txt.

Marking Criteria Marks Program can only handle multiple-word names 1 Program calculates journey cost correctly 3 Program calculates time cost correctly 2 Program displays the messages correctly 3 Code factored into functions for reuse 5 Compilation messages and sample run outputs (if the program runs correctly) 1

Task 2 (15 marks)

Write a C++ program task_1_2.cpp which prompts for an integer, validate the integer, and if not valid, ask again till a valid integer is entered. Repeat for another five integers with different validation criteria.

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

C:> a Please enter the year: 2013 Please enter the month: 1 Please enter the day: 24 Please enter the hour: 13 Please enter the minute: 55 Please enter the second: 45 Your inputs are: Year = 2013 Month = 1 Day = 24 Hour = 13 Minute = 55 Second = 45 C:>a Please enter the year: 1969 1970 <= Year <= 2020! Please enter the year: 2034 1970 <= Year <= 2020! Please enter the year: Hello and bye 1970 <= Year <= 2020! Please enter the year: 2013 Please enter the month: 0 1 <= Month <= 12! Please enter the month: 13 1 <= Month <= 12! Please enter the month: Hello and bye 1 <= Month <= 12! Please enter the month: 1 Please enter the day: 0 1 <= Day<= 31! Please enter the day: 32 1 <= Day<= 31! Please enter the day: Hello and bye 1 <= Day<= 31! Please enter the day: 24 Please enter the hour: -1 0 <= Hour<= 23! Please enter the hour: 24 0 <= Hour<= 23! Please enter the hour: Hello and bye 0 <= Hour<= 23! Please enter the hour: 13 Please enter the minute: -1 0 <= Minute <= 59! Please enter the minute: 60 0 <= Minute <= 59! Please enter the minute: Hello and bye

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Marking Criteria Marks Data input 1 Data validation 3 Looping for a correct input 4 Handle error input with appropriate output message 4 Solution uses main function only for the code 2 Compilation messages and sample run outputs (if the program runs correctly) 1

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs for task 2. Put all compilation messages and sample run outputs in task_1_3.txt.

Marking Criteria Marks Function declaration 4 Function definition 7 Parameter passing to functions 7 Looping for correct input 1 Compilation messages and sample run outputs (if the program runs correctly) 1

Task 4 (20 marks)

Write a C++ program task_1_4.cpp which uses a function void get_option(some_parameter) to get user input for a char option. The char must be an alphanumeric character i.e. alphabets and digits. If the input is not valid, void get_option() will be called until a valid user input is obtained.

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs shown above. Put all compilation messages and sample run outputs in task_1_4.txt.

Marking Criteria Marks Function declaration 4 Function definition 5 Passing parameters 5 Looping for correct input 1 Calling test() 4 Compilation messages and sample run outputs (if the program runs correctly) 1

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Outputs user name, local time, abbreviated weekday, and the day of the year for the date-time using the user name and appropriate options (‘c’, ‘a’, ‘j’, ‘Y’) for get_string_component().

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

Marking Criteria Marks Get user name using function call 1 Get date-time information using function call 1 Get options using function call 1 Date-time structure 6 Get localtime, weekday, days of the year 6 Correct Output 5 Compilation messages and sample run outputs (if the program runs correctly) 10

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valeriegwavuya444-blog · 7 years ago

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CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

Date-time structure:

struct tm

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

Task 2 (15 marks)

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

Task 4 (20 marks)

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

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simran94674-blog · 7 years ago

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New Post has been published on https://punjabassignmenthelp.com/csc2402-assignment-1-five-tasks-linux/

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

Date-time structure:

struct tm

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

Task 2 (15 marks)

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

Task 4 (20 marks)

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

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metinablachim63-blog · 7 years ago

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New Post has been published on https://punjabassignmenthelp.com/csc2402-assignment-1-five-tasks-linux/

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

Date-time structure:

struct tm

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

Task 2 (15 marks)

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

Task 4 (20 marks)

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

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dianadorman555-blog · 7 years ago

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New Post has been published on https://punjabassignmenthelp.com/csc2402-assignment-1-five-tasks-linux/

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

Date-time structure:

struct tm

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

Task 2 (15 marks)

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

Task 4 (20 marks)

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

Punjab Assignment Help

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kayaknight666-blog · 7 years ago

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New Post has been published on https://punjabassignmenthelp.com/csc2402-assignment-1-five-tasks-linux/

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

Date-time structure:

struct tm

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

Task 2 (15 marks)

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

Task 4 (20 marks)

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

Punjab Assignment Help

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#COMPUTER ASSIGNMENT HELP

0 notes

marcinferfet456-blog · 7 years ago

Photo

New Post has been published on https://punjabassignmenthelp.com/csc2402-assignment-1-five-tasks-linux/

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX

CSC2402 | ASSIGNMENT 1 FIVE TASKS LINUX | LINUX

COMPUTER ASSIGNMENT HELP

If you are using Linux, you can cut and paste the output on the terminal window into a text such as vim.

Name the files as task_1_1.cpp, task_1_2.cpp, task_1_3.cpp, task_1_4.cpp, task_1_5.cpp, task_1_1.txt and task_1_2.txt, task_1_3.txt, task_1_4.txt and task_1_5.txt.

Other files you should download:

cpp

Background information

Structure

Structure is one way to bundle data together in C++.

Suppose we want to manipulate a group of related data: name, age and salary of a person. We can create a data type (structure) called Person as shown in sample_structure.cpp.

#include <iostream>

using namespace std;

int main()

struct Person

string name;

int age;

double salary;

;

Person Peter; // Similar to string Peter;

Peter.name = “Peter the Great”; // dot refers to member name

Peter.age = 44;

Peter.salary = 44.44;

cout << Peter.name << ” is ” << Peter.age

” and salary is $” << Peter.salary << endl; return 0;

Pointers

#include <iostream>

using namespace std;

void funct1(int);

void funct2(int&);

void funct3(int*);

int main()

int n = 100; // integer

int * iptr1; // pointer

int * iptr2;

100 will be printed cout << n << endl;

address of int is a pointer to the same int iptr1 = &n;

value pointed at by iptr will be printed cout << *iptr1 << endl;

create an unnamed int and point to it with iptr2 iptr2 = new int(300);

cout << *iptr2 << endl;

pass by value, 101 will be printed

funct1(n);

n not changed, 100 will be printed cout << n << endl;

pass by reference, 101 will be printed funct2(n);

n changed, 101 will be printed

cout << n << endl;

pass by pointer (reference), 301 will be printed funct3(iptr2);

n changed, 301 will be printed

cout << *iptr2 << endl;

return 0;

void funct1(int i)

i += 1;

cout << “Inside funct1, i = ” << i << endl;

the ‘&’ appearing after the parameter type indicates

that it is passed by reference

void funct2(int& i)

same as pass by value i += 1;

cout << “Inside funct1, i = ” << i << endl;

void funct3(int* i)

*i += 1; // *i instead of i

cout << “Inside funct1, i = ” << *i << endl;

<ctime> library

Date-time structure:

struct tm

We can retrieve any one of the date-time structure member using strftime(). Options for strftime()

and the range of returned values:

Sample_time_A.cpp illustrates the use of the library functions to get the current time:

#include <iostream>

#include <ctime>

using namespace std;

int main()

calendar time time_t rawtime;

get the current calendar time time( &rawtime );

date-time structure pointer struct tm *timeinfo;

break the calendar time to components timeinfo = localtime ( &rawtime );

retrieve individual date-time structure members

using option “%a” and option “%A”.

char ans_abr[40]; // Character array

char ans_full[40];

strftime(ans_abr, 40, “%a”, timeinfo);

strftime(ans_full, 40, “%A”, timeinfo);

view the formatted date-time structure member values cout << ” Abbreviated weekday name: ” << ans_abr << endl;

cout << ” Full weekday name: ” << ans_full << endl; return 0;

#include <iostream>

#include <ctime>

using namespace std;

int main()

date-time structure struct tm tmStruct; int y = 2013;

int m = 4; // April int d = 1; // my lucky day int h = 14; // 2 pm int min = 30; // half past int s = 3; // who cares?

initialize/modify the date-time structure

tmStruct.tm_year = y – 1900; // Legacy problem

tmStruct.tm_mon = m – 1; // month starts from 0 not 1

tmStruct.tm_mday = d;

tmStruct.tm_hour = h-1;

tmStruct.tm_min = min-1;

tmStruct.tm_sec = s-1;

call mktime() to adjust other members of tmStruct mktime ( &tmStruct );

using option “%a” and option “%A”.

char ans_localtime[40]; // Character array char ans_full[40];

strftime(ans_localtime, 40, “%c”, &tmStruct); strftime(ans_full, 40, “%A”, &tmStruct);

view the formatted date-time structure member values cout << “Local date time is: ” << ans_localtime << endl; cout << ” Full weekday name: ” << ans_full << endl; return 0;

Task 1 (15 marks)

Write a C++ program that is to be used for a local taxi fare calculation. The rules regarding the calculations are as follows. (Note: American spelling for Kilometer in specification)

The fare is calculated based on distance travelled and time taken to travel the distance.

At the end of the ride, a fee of $0.20 cents is charged based on the total minutes travel time.

The total fare is the journey cost added to the travel time cost.

The application is then to print out a personalised invoice for the journey as specified below.

Your application needs to display a prompt for information to be inputted by the user.

Input from the keyboard is for whole numbers only (int).

C:>task_1_1

Please enter your name: Peter Johnson

Please enter distance travelled as km: 12

Please enter duration of journey in minutes: 16

Hello, Peter!

Your journey of 12 kilometers and 16 minutes comes to $12.20

Travel cost $9.00 for distance of 12 kilometers Time cost $3.20 for 16 minutes travel time.

C:>task_1_1

Please enter your name: Green Pumpkin

Please enter distance travelled as km: 1

Please enter duration of journey in minutes: 13

Hello, Green!

Your journey of 1 kilometers and 13 minutes comes to $4.60

Travel cost $2.00 for distance of 1 kilometers Time cost $2.60 for 13 minutes travel time.

C:>task_1_1

Please enter your name: Tom Green

Please enter distance travelled as km: 21

Please enter duration of journey in minutes: 8

Hello, Tom!

Your journey of 21 kilometers and 8 minutes comes to $19.60

Travel cost $18.00 for distance of 21 kilometers Time cost $1.60 for 8 minutes travel time.

Task 2 (15 marks)

Your solution source code is to be only the main() function. The whole logic for the solution needs to reside in the main routine.

Sample outputs are:

0 <= Minute <= 59!

Please enter the minute: 30

Please enter the second: -1

1 <= Second<= 59!

Please enter the second: 60

1 <= Second<= 59!

Please enter the second: Hello and bye 1 <= Second<= 59!

Please enter the second: 35

Your inputs are:

Year = 2013

Month = 1

Day = 24

Hour = 13

Minute = 30

Second = 35

The name of the six integers and their validation criteria are shown below:

Name Criteria year 1970 <= year <= 2020 month 1 <= month <= 12 day 1 <= day <= 31 hour 0 <= hour <= 23 min 0 <= min <= 59 sec 0 <= sec <= 59

You should record the compilation message(s) even though there may be none. Run the program as shown in the sample runs. Put all compilation messages and sample run outputs in task_1_2.txt.

Task 3 (20 marks)

Write second version of Task 2 where you reflector the code to use functions as specified below.

Your code in Task 2 for entering each integer is the same except the prompts, variable names and the validation criteria.

Group the code for entering an integer to form a function void get_data(). The parameters for the function void get_data()are:

the prompt for user input;

the prompt for correct range of input;

integer variable used to store the user input;

criteria 1 – input should be smaller than or equal to this value; criteria 2 – input should be greater than or equal to this value;

void get_data() returns control to caller only when the input data is valid.

Write a C++ program task_1_3.cpp calls get_data() to get 6 valid integers. The validation criteria and sample output should be the same as shown in Task 2.

Task 4 (20 marks)

The validated option will then be used as a parameter in calling a function string test(). Function string test() will display different strings according to the value of option.

Value of option can only be:

a digit (use isdigit(char) in <cctype>)

o char option = ‘1’; isdigit(option) will return true;

char option = ‘a’; isdigit(option) will return false; a lower case letter (use islower(char) in <cctype>)

o char option = ‘a’; islower(option) will return true;

char option = ‘A’; islower(option) will return false; an upper case letter (use isupper(char) in <cctype>)

o char option = ‘A’; isupper(option) will return true; o char option = ‘1’; isupper(option) will return false;

test() is shown below:

string test(char option)

if (isupper(option)) return “An upper case letter is entered!”;

if (islower(option)) return “A lower case letter is entered!”;

return “A digit is entered!”;

Sample outputs:

C:>a

Please enter an alphanumeric char: &

Please enter an alphanumeric char: (

Please enter an alphanumeric char: ?

Please enter an alphanumeric char: 2

A digit is entered!

C:>a

Please enter an alphanumeric char: a

A lower case letter is entered!

C:>a

Please enter an alphanumeric char: A

An upper case letter is entered!

Task 5 (30 %)

Compile and run sample_5.cpp. Study the program alongside with the output and make sure you understand how to use the time library functions.

Write a C++ program which:

Prompts user for inputting his name consisting of multiple words;

Prompts user for inputting valid int year, int month, int day, int hour, int minute, int second.

o The validation criteria is the same as in task 2.

Prompts user to input 4 options for calls to get_string_component() .

Option can only be one of the following: a abbreviated weekday

A full weekday

b abbreviated month B full month

c local date and time d day of month (01-31) H hour (00-23)

I hour (1-12)

j day of the year (001-366) m month (01-12)

M minute (00-59) p Am or PM

S second (00-59)

U week numberof the year (00-53); Sunday as first day of week

w weekday (0-6, Sunday is 0)

W week numberof the year (00-53);

Monday as first day of week

x local date

X local time

year without century (00-99) Y year with century

Z time zone.

Constructs a date-time structure with the date time information just entered;

Sample output:

C:work_directoryCSC2402S1_2013assignmentS1_

Please enter your name: Peter Johnson Junior

Please enter the year: 2013

Please enter the month: 1

Please enter the day: 24

Please enter the hour: 2

Please enter the minute: 4

Please enter the second: 6

Please enter your first option: c

Please enter your second option: a

Please enter your third option: j

Please enter your fourth option: Y

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