#include<stdio.h>
#include<stdarg.h>
int main()
{
    double average(double,double,...);
    double result=0;
    result=average(1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,0.0);
    printf("%lf\n",result);
}
double average(double v1,double v2,...)
{
    va_list parg;
    double sum=v1+v2;
    double num=2;
    double this=0.0;
   
    va_start(parg,v2);
    while(1)
    {
        this=va_arg(parg,double);
        if(this==0.0)
            break;
        sum+=this;
        num++;
    }
   
    va_end(parg);
   
    return sum/num;
}

[此贴子已经被作者于2017-1-19 12:15编辑过]