C语言：成绩最高学号

#include<iostream.h>
class Stu
{
public:
    int num;
    float score;
    static int maxnum;
    static float maxscore;
    void In() {cin>>num>>score;}
};
    int Stu::maxnum=0;
    float Stu::maxscore=0;
void Max(Stu a[5])
{
    int i;
    for(i=0;i<5;i++)
        if(a[i].score>a[i].maxscore)
        {
            a[i].maxscore=a[i].score;
            a[i].maxnum=a[i].num;
        }
}
int main()
{
    Stu student[5];
    int j;
    for(j=0;j<5;j++)
        student[j].In();
    Max(student);
    cout<<Stu::maxnum<<" "<<Stu::maxscore<<endl;
    return 0;
}