#include<iostream.h>
class Cdate
{
public:
    void set(int y,int m,int d);
    int leapyear();
    void print();
private:
    int year,int month,int day;
};
void Cdate::set(int y,int m,int d)
{
    year=y;
    month=m;
    day=d;
}
int Cdate::leapyear()
{
    return(year%4==0&&year%100!=0)||(year%400==0);
}
void Cdate::print()
{
    cout<<year<<"."<<month<<"."<<day<<endl;
}
void main()
{
    Cdate date;
    date.set(1998,6,5);
    int leap=date.leapyear();
    cout<<leap<<endl;
    date.print();
}

小弟初学，帮忙看看这个程序有什么错误啊

#include<iostream>
using namespace std;

class Cdate
{
public:
    void set(int y,int m,int d);
    int leapyear();
    void print();
private:
    int year;
    int month;
    int day;
};
void Cdate::set(int y,int m,int d)
{
    year=y;
    month=m;
    day=d;
}
int Cdate::leapyear()
{
    return(year%4==0&&year%100!=0)||(year%400==0);
}
void Cdate::print()
{
    cout<<year<<"."<<month<<"."<<day<<endl;
}
void main()
{
    Cdate date;
    date.set(1998,6,5);
    int leap=date.leapyear();
    cout<<leap<<endl;
    date.print();
}