日期时间类

#include <iostream>
using namespace std;
class Date
{
public:
    void SetDate(int y,int m,int d)
    {
        Year=y;
        Month=m;
        Day=d;
    }
    void PrintDate ()
    {
        cout<<Year<<" / "<<Month<<" / "<<Day<<" / ";
    }
    Date():Year(0),Month(0),Day(0){};
    Date(int y,int m,int d):Year(y),Month(m),Day(d){};
private:
    int Year,Month,Day;
};
class Time
{
public:
    void SetTime(int h,int m,int s)
    {
        Hour=h;
        Minute=m;
        Second=s;
    }
    void PrintTime ()
    {
        cout<<Hour<<" / "<<Minute<<" / "<<Second;
    }
    Time():Hour(0),Minute(0),Second(0){};
    Time(int h,int m,int s):Hour(h),Minute(m),Second(s){};
private:
    int Hour,Minute,Second;
};
class TimeDate:public Date,public Time
{
public:
    TimeDate():Date(),Time(){};
    TimeDate(int y,int m1,int d,int h,int m2,int s):Date(y,m1,d),Time(h,m2,s){};
    void PrintDate_Time()
    {
        PrintDate();
        PrintTime();
    }

};
int main()
{
    TimeDate dt_a,dt_b(2010,4,16,9,30,0);
    cout<<"dt_a: ";
    dt_a.PrintDate_Time();
    cout<<endl;
    cout<<"dt_b: ";
    dt_b.PrintDate_Time();
    dt_a.SetTime(20,00,00);
    dt_a.SetDate(2008,8,7);
    cout<<endl;
    cout<<"dt_after uptate: ";
    dt_a.PrintDate_Time();
    return 0;
}