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//program to create a function that takes three integer arguments and calculates their sum #include<stdio.h> #include<conio.h> void sum(int,int,int); void sum(int a,int b,int c) { int sum; sum=a+b+c; printf("sum of three numbers is %d",sum); } void main() { int a,b,c; clrscr(); printf("enter value for a"); scanf("%d",&a); printf("enter value for b"); scanf("%d",&b); printf("enter value for c"); scanf("%d",&c); sum(a,b,c); getch(); }