#include <iostream.h>
int max(int a,int b);
void main()
{
    int x,y,z;
    cin>>x>>y;
    z=max(x,y);
    cout<<z<<endl;
}
int max(int a,int b)
{
    if(a>b)
        a=a;
    else
        a=b;
    return a;
}
应该是输入x,y的值后比大小的.....但是一运行就出现 press any key to continue !