C PROGRAM: Program to add two numbers using call by reference in C Language - Sparsh Blog

 Ans:->

So,

What do you mean by Call by Refrence❓

➤

                            In Call by Refrence, the address of the variable is passed into the function call as the actual parameter and the origianal value of he variable is not modified.

The program to add two numbers using call by reference in C Language

Program is as follows:--

#include <stdio.h>

long addTwoNumbers(long *, long *);

int main()

{

    long fno, sno, sum;

    printf("\n\n Pointer : Add two numbers using call by reference:\n");

    printf("-------------------------------------------------------\n");

    printf(" Input the first number : ");

    scanf("%ld", &fno);

    printf(" Input the second number : ");

    scanf("%ld", &sno);

    sum = addTwoNumbers(&fno, &sno);

    printf(" The sum of %ld and %ld is %ld\n\n", fno, sno, sum);

    return 0;

}

    long addTwoNumbers(long *n1, long *n2)

    {

        long sum;

        sum = *n1 + *n2;

        return sum;

     }

OUTPUT:---

Pointer : Add two numbers using call by refrences:

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

Input the first number :500

Input the second number : 58

The sum of 500 and 58 is 558

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