ACS130留学生程序代做、Software编程语言代做、代写c++设计编程

日期：2020-11-11 11:34

ACS130 Introduction to Systems Engineering and Software

Individual C Programming Assignment 1

Assignment weighting: 10% of module mark

Assignment released: Friday 23 October (Semester 1, Week 4)

Assignment due: 11.59pm Monday 9 November (Semester 1, Week 7).

How to submit

The assignment must be submitted to Blackboard by 11.59pm Monday 9 November, at the

link ACS130 > Assessment > C Programming ACS130-001. You must upload you *.c file.

There is a separate drop box for ACSE and Aero students so please submit to the correct drop

box. Mac users please make sure you submit your .c file and nothing else. If, when I

download your program from Blackboard I cannot run the file because it is not a .c file

(or for any other reason), you will NOT be marked.

Marking

I will mark your program. The attached mark sheet provides a guide to the areas on which

feedback will be provided. The rubric on Blackboard also provides a guide to the marks for

this assignment. Mac users, you need to make sure that your program runs on a Windows

environment (I do not own a Mac).

How you should work

This is an individual assignment, and it must be wholly your own work. You should not

discuss a solution to this assignment with anyone else, and you should not work with anyone

else to produce a solution. I will check for collusion and plagiarism.

You must complete this assignment in your own time, NOT in ACS130 lab sessions.

Learning outcomes

In doing this assignment, you will demonstrate your ability to program in C to manipulate files,

output to the screen, implement the selection and repetition constructs, and manipulate

variables, as well as use functions.

Assignment briefing

Write a C program to:

• Read characters (no spaces but a combination of numbers, letters and symbols) all

on the same line from the keyboard and write the characters (one at a time) to the

file File1.txt (all on the same line), then close the file.

• Read the characters from the file “File1.txt” that you have just created. (Hint: read

the characters one at a time), at the same time printing only the number characters

to the screen

• Print the count of how many numbers there are and also print the sum of these

numbers.

• In a function float mean(float sum, float N)where sum is the sum of the numbers

entered, and N is the total number of numbers.

o calculate the mean of the numbers

o return this mean to main

• Print to the screen the mean (to 2 d.p.) of the numbers from main.

• You need to program defensively and check to see if the file exists.

For example, your program should look like this when input sf98375hf^%839*&% is used:

Figure 1: Example output of code.

Please note:

1. The only library you may include is stdio.h, therefore you will not be allowed to use

pre-defined functions from any other library. You will get 0 if you use more

functions defined in other libraries (eg atoi() since this is defined in the stdlib.h

library).

2. You may not use arrays or stings (which will be covered in at the end of semester

1). You will get 0 if you use arrays or strings.

3. You may not use global variables. These are variables declared outside main. You

will get 0 if you use global variables.

4. When your program is marked, I will type in a range of characters to test your

program. You should test your program thoroughly before you submit it.

5. Your program must have meaningful comments, including a header comment, and

be well-laid out and readable.

6. Helpful tip 1: You need to think about how you’re going to check for the end of line

character.

7. Helpful tip 2: You need to think about how you’re going to convert the numerical

characters into numbers in order to be able to find the sum. Use the ASCI table (see

www.ascii-code.com) and refer to details given verbally in the lecture. You are not

allowed to use the function int atoi() because this is in the stdlib.h library.

Marking Scheme for Software

Marking Criterion Mark

Does the code use any other library other than stdio.h or uses

arrays/strings or uses global variables- 0 marks!

Looking at the code

Program layout and readability including: is the code indented, does it have

comments, header comments and meaning variable names?

/2

Running the code, using a test input

Does the code do what is asked in this assignment briefing when tested? Read

line, print to file, read from file and print numbers to screen, calculate and print

sum, calculate and print number of occurrences of number characters and prints

mean. Are the calculations correct?

Does it check for file and abort the program (with a suitable message) if the file

is not found?

Does it use the function float mean(float sum, float N) to find the mean, which

gets printed from main()?

Output to screen

Is the output on the screen in a clear layout? /1

Total marks possible /10

Penalties for late submission

A late submission will be any assignment not submitted to Blackboard by the deadline. Late

submissions will incur the usual penalties of a 5% reduction in the mark for every day (or part

thereof) that the assignment is late and a mark of zero for submission more than five days

late.

Unfair means

You are permitted to view the resources on ACS130 Blackboard, C text books and C programs

published on the internet, for insight into C programming, but you are not permitted to copy

any code that you have not written to submit as your own work. You are not permitted to seek

or accept help on this assignment, or code for this assignment, from any internet site or forum.

You are not permitted to work with any other person on this assignment, and you are not

permitted to submit any other person’s algorithm or code as your own work. Any suspicion

of the use of unfair means will be investigated and may lead to penalties. References

must be provided to any other work that is used to inform the ideas for this assignment. See

http://www.shef.ac.uk/ssid/exams/plagiarism for more information.

Extenuating Circumstances

If you have medical or serious personal circumstances which cause you to be unable to submit

this assignment on time or which may have affected your performance, please inform me, and

complete and submit an extenuating circumstances form along with documentary evidence of

the circumstances. See http://www.sheffield.ac.uk/ssid/forms/circs.

Help

This assignment briefing and the lectures and resources on the ACS130 Blackboard course

and the training in C practice sessions provide all the information that is required to complete

this assignment. It is not expected that you should need to ask further questions. If you

need clarifications on the assignment, then please post a question on the ACS130

Blackboard discussion board. The discussion board allows everyone the chance to view an

answer to a question, as well as the opportunity to contribute to the discussion.