CW1程序代写、代做c++程序设计

日期：2023-11-07 09:11

CW1: Function Grapher for Hackers

GA 18, Fry Building,

Read the whole document before you start. Particularly the

slide regarding plagiarism.

Coursework Objective

You will write a c program that produces the function

graph of , for any in

the terminal window of VSCode.

A complete program should produce something like:

Function graph for sin(2.00x+1.57):

Why Terminal Grapher?

Although many software enable you to generate function

graphs easily, it is not always easy to include graphs in

traditional text based editors.

You want to post a function graph on reddit, which does

not allow comments with images.

You want to attach a function graph in the email, but your

editor only accepts text messages.

Part I

0. Download the CW file, and unzip it to your labpack.

1. Open grapher.c .

2. Create a function plot with two inputs a and b and no

output.

3. In lecture 4, we talked about how to write code to

produce the following output:

****

****

****

****

4. Copy and paste relevant code to plot , so now you can

see the above output when you call plot in main .

Part II

0. Now, remove the printf statement in your code.

1. Modify your loops, so it prints out the following

coordinates .

1.00, 0.00

1.00, 0.10 //the second coordinate increases by .1

...

1.00, 6.20 //the second coordinate stops at 6.20

0.80, 0.00 //the first coordinate decreases by .2

0.80, 0.10

...

0.80, 6.20

...

-1.00, 0.00

-1.00, 0.10

...

-1.00, 6.20 // the first coordinate stops at -1.00

Part II

Hint, what output will the following code produce?

for(double i = 0.0; i <= 1.0; i = i + 0.1){

printf("%.2f\n", i);

}

Make sure you can produce the correct output before you

continue.

Part III

Now, remove the printf statement in your code.

Write code according to the following description:

For each coordinate ,

If , print out *

otherwise, print out an empty space .

Hint: The absolute value function is fabs(a) .

With some additional tricks you have learned from the

lectures/labs, you should be able to produce:

Part III

*********

**** ***

** ***

** **

** **

** ** *

** **

** **

*** **

*** ****

*********

At this moment, there should be about 10 lines of code in

your plot function. Do not over engineer your code.

Part IV (Challenging)

Modify your code, so plot(a,b) produces the graph for

function .

Add a title to your graph:

Function graph for sin(ax+b) , where a and b will be

replaced with the actual values of a and b .

Part V (Challenging)

Modify your code, so it produces a horizontal axis like

this:

Function graph for sin(2.00x+1.57):

*** **** **

* ** ** **

** * * *

* * * *

* * * *

---------------------------------------------------------------

* * * *

* ** * *

* * ** *

** ** * **

**** *****

Part V (Challenging)

Modify your code, so it marks with X .

Function graph for sin(2.00x+1.57):

*** **** **

* ** ** **

** * * *

* * * *

* * * *

X---------------X---------------X---------------X--------------

* * * *

* ** * *

* * ** *

** ** * **

**** *****

Part V (Challenging)

Now, add the verticle axis

Function graph for sin(2.00x+1.57):

|** **** **

| * ** ** **

| ** * * *

| * * * *

| * * * *

X---------------X---------------X---------------X--------------

| * * * *

| * ** * *

| * * ** *

| ** ** * **

| **** *****

You should be able to do all 5 parts with less than 50 lines of

code (my answer uses 34 lines of code). Do not over engineer

your code (such as adding user interface).

Marking Criteria

5% for submitting a C file with the correct file name, i.e.,

ab1234.c where ab1234 is your email address before @ .

10% for submitting a C file that compiles.

15% for submitting a C file that produce the correct

output for part I.

30% for submitting a C file that produce the correct

output for part II.

50% for submitting a C file that produce the correct

output for part III.

60% for submitting a C file that produce the correct

output for part IV.

Marking Criteria

80% for submitting a C file that produce the correct

output for part V.

20% additional points for good coding practice:

Good code format.

Apt use of comments.

Good variable/function naming scheme.

Plagiarism

You can discuss about the general strategy of your code

with your coursemates.

You must write the code independently! Do not write

code together!

Academic collusion is a serious offense.

Certainly do not copy other people's code.

You can use code you found on internet, but you MUST

provide the source in the comments. If we found identical

source code from the internet without any mentioning or

citation, it will be regarded as plagiarism.