C program to demonstrate example of Variable Arguments

/*C program to demonstrate example of Variable Arguments.*/

 

#include <stdio.h>

#include <stdarg.h>

 

/*find sum of numbers*/

int sum(int N, ...)

{

    int loop,sum;

    va_list va; /*for argument list*/

     

    va_start(va,N); /*init with number of arguments*/

     

    /*access arguments & calculating sum*/

    sum=0;

    for(loop=0;loop<N;loop++){

        sum+=va_arg(va,int);

    }

     

    return sum;

}

 

int main()

{  

    printf("Sum of 10, 20 = %d\n",sum(2,10,20));

    printf("Sum of 10, 20, 30, 40 = %d\n",sum(4,10,20,30,30));

    printf("Sum of 10, 20, 30, 40, 50, 60 = %d\n",sum(6,10,20,30,30,40,50));

     

    return 0;

}