(Solved Homework): a) Here is a line of code: sum= a+b write a complete C function named fun that has a and b as parameters and returns their calculated sum via th

a) Here is a line of code: sum= a+b

write a complete C function named fun that has a and b as parameters and returns their calculated sum via the return statement.Assume all the values are integers.

……..

Show transcribed image textroblem tl4 un point) Here is a line of code: sum a b; write a complete C function named fun that has a and b as parameters and returns their calculated sum via the return statement, Assume all the values are integers. b) What is the purpose of a function prototype? When is a prototype NOT needed in a program? c) Suppose the function fun is also expected to compute the difference (a b) and the product (a b). Re-write your function so that it can send all three values diff, prod) back. Do not use a structure. (sum, d) suppose you have e following code fragment: int x, y; print (“Enter two integers: scanf (“Xd %d”, &x, &y); Your function call to fun goes after this line write the code needed to invoke (call) your function. Pass itthe x and y values. Also declare any other variables you need to hold the values that the function nds back. se

Expert Answer

a) Here is a line of code : sum = a+b
write a complete c function named fun that has a and b parameters and return their calculated sum via the return statement. Assume all the values are integers

Ans)
/* function to calculate sum of two given integers */
int fun(int a, int b)
{
int sum_value = 0;

sum_value = a + b;

return sum_value;
}

b) What is the purpose of a function prototype ? When is a prototype not needed in the program ?
Ans)
The function prototype is considered as a best practise to let the compiler know how to respond to a function when it is called. In fact it allows compiler to ensure the parameters passed and values returned from the function is valid by comparing with the function prototype. It actually lets compiler know that these are the arguments function can accept and their return value types. Thats why other name for function prototype is function declaration.

Although function prototype is considered to be a best practise it is not mandatory if you define function before it is called. Here is an example:

#include <stdio.h>

/*
program to calculate sum and return value to the caller
*/

int fun(int a, int b)
{
int sum_value = 0;

sum_value = a + b;

return sum_value;
}

int main()
{
int x, y, sum;

printf(“nEnter two integers: “);
scanf(“%d %d”, &x, &y);
sum = fun(x,y);
printf(“nsum of the two numbers %d and %d is %dn”, x, y, sum);
}

c) Suppose the function fun is also expected to compute the difference(a-b) and the product(a*b). Rewrite your function so that it can send all three values(sum, diff, prod)back. Do not use structure.
Ans)

/* function to calculate sum, subtraction and multiplication of two given integers */
void fun(int a, int b, int* add, int* sub, int* mult)
{
*add = a + b;
*sub = a – b;
*mult = a * b;
}

d) suppose you have the following code fragment:
int x, y;
printf(“Enter two integers: “);
scanf(“%d %d”, &x, &y);

//your function call to fun goes after this line

Write the code needed to invoke(call) your function. Pass it the x,y values.

Also declare any other variables you need to hold the values that the function sends back.

Ans)

Code:
Unix Terminal> cat arithmetic.c
#include <stdio.h>

/*
program to calculate sum, difference and product of given two integers
*/

/* function prototype declaration */
void fun(int, int, int *, int *, int *);

int main()
{
int x, y, sum, diff, prod;

printf(“nEnter two integers: “);
scanf(“%d %d”, &x, &y);
fun(x, y, &sum, &diff, &prod);
printf(“nsum of the two numbers %d and %d is %dn”, x, y, sum);
printf(“ndifference of the two numbers %d and %d is %dn”, x, y, diff);
printf(“nproduct of the two numbers %d and %d is %dn”, x, y, prod);
}

/* function to calculate sum, subtraction and multiplication of two given integers */
void fun(int a, int b, int* add, int* sub, int* mult)
{
*add = a + b;
*sub = a – b;
*mult = a * b;
}

Execution and output:
Unix Terminal> ./a.out

Enter two integers: 29 89

sum of the two numbers 29 and 89 is 118

difference of the two numbers 29 and 89 is -60

product of the two numbers 29 and 89 is 2581
Unix Terminal> ./a.out

Enter two integers: 10 19

sum of the two numbers 10 and 19 is 29

difference of the two numbers 10 and 19 is -9

product of the two numbers 10 and 19 is 190
Unix Terminal>

iWriteHomework
Order NOW for a 10% Discount
Pages (550 words)
Approximate price: -

Why Us?

Top Quality and Well-Researched Papers

All ourbpapers are written from scratch. In fact, Clients who ask for paraphrasing services are highly discouraged. We have writers ready to craft any paper from scratch and deliver quality ahead of time.

Professional and Experienced Academic Writers

Our writers keeps you posted on your papers progress - providing you with paper outline/draft. You are also at liberty to communicate directly with your writer.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time, in many cases quite ahead of time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.

× Contact Live Agents