/* Sending and receiving values between functions */
#include<stdio.h>
main( )
{
    int a, b, c, sum ;
    printf ( "\nEnter any three numbers " ) ;
    scanf ( "%d %d %d", &a, &b, &c ) ;
    sum = calsum ( a, b, c ) ;    
    printf ( "\nSum = %d", sum ) ;
    system("pause");
}
calsum (int a,int b, int c )
{
    int sum ;
    sum = a + b + c ;
    return ( sum ) ;
}