Function with no arguments and with return value (Non-void function without parameters/Upward communication)

Function with no arguments and with return value

(Non-void function without parameters/Upward communication) 

#include<stdio.h>

int add();

void main()

{

int c;

c=add();

printf(“Sum is =%d”,c);

}

int add()

{

int a,b,c;

printf(“Enter two integers\n”);

scanf(“%d%d”,&a,&b);

c=a+b;

return(c);

}