Question

Write a program to illustrate function call.

Answer 1

The answer is in the attachment

Answer 2

Write a program to illustrate function call.

Explanation:

C program to add two integer numbers.

#include <stdio.h>

int sum(int a, int b);         // function prototype

int main()

{

   int n1,n2,s;

   printf("Enters two numbers: ");

   scanf("%d %d",&n1,&n2);

   s = sum(n1, n2);        // function call  with two parameters

   printf("sum = %d",s);

   return 0;

}

int sum(int a, int b)         // function definition    

{

   int result;

   result = a+b;

   return result;                  // return statement

}

Output

Enters two numbers: 45

56

sum = 101

Note

In above program,function call is sum(n1, n2) where sum is function name and n1 and n2 are two parameters separated by commas and enclosed within parentheses.