程序代码：

#include<stdio.h>
#include<stdarg.h>

int max_int(int n,...)
{
    va_list ap;
    int i,current,largest;
    va_start(ap,n);
    largest=va_arg(ap,int);
    for(i=1;i<n;i++)
    {
        current=va_arg(ap,int);
        if(current>largest) largest=current;
    }
    va_end(ap);
    return largest;
}
int main()
{      
   printf("max=%d\n",max_int(5,3,5,8,1,15));
   return 0;
}