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;}