可变参数函数测试例程

/* Copyright(C) 2012 for free
 * All right reserved
 */
/*
 * @file accumulation.c
 * @synopsis  可变参数函数测试例程
 * @author sense, [e-mail]
 * @version 1.0
 * @date 2012-07-11
 */
#include <stdio.h>
#include <stdarg.h>

int accumulation(int total,...)
{
    va_list args = NULL;
    int i = 0;
    int result = 0;

    va_start(args,total);
    for (i=0; i<total; i++){
        result += va_arg(args,int);
    }

    va_end(args);

    return result;
}

int main(int argc,char *argv[])
{
    int sum = 0;

    sum = accumulation(2,10,20);
    printf("sum: %d\n",sum);

    sum = accumulation(4,10,20,40,50);
    printf("sum: %d\n",sum);

    return 0;
}