C Program to find the sum of two numbers using user-defined function.

        In this example, we will calculate the sum of to numbers using user-defined function. 

Here in the output we have taked two numbers 23 and 65 which after calculation gives 88.

PROGRAM

#include<stdio.h>

#include<conio.h>

int sum(int a,int b);

void main()

{

    int x,y,res=0;

    printf("Enter the values of x and y :");

    scanf("%d%d",&x,&y);

    res=sum(x,y);

    printf("The sum is : %d",res);

    getch();

}

int sum(int a,int b)

{

    return(a+b);

}

OUTPUT

Enter the values of x and y :23

65

The sum is : 88

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