/**Copyright (c) 2013, 烟台大学计算机学院* All rights reserved.* 作    者：马广明* 完成日期：2014 年 5 月 19 日* 版 本 号：v1.0* 问题描述：日期时间类*/#include <iostream>using namespace std;class Date{public:    Date(int y,int m,int d)    {        year=y;        month=m;        day=d;    }    void SetDate(int y,int m,int d)    {        year=y;        month=m;        day=d;    }    void PrintDate()    {        cout<<year<<"/"<<month<<"/"<<day<<'\t';    }protected:    int year,month,day;};class Time{public:    Time(int h,int m,int s)    {        hour=h;        minute=m;        second=s;    }    void SetTime(int h,int m,int s)    {        hour=h;        minute=m;        second=s;    }    void PrintTime()    {        cout<<hour<<":"<<minute<<":"<<second<<endl;    }protected:    int hour,minute,second;};class TimeDate:public Date,public Time{public:    TimeDate(int y=0,int mon=0,int d=0,int h=0,int min=0,int s=0):        Date(y,mon,d),Time(h,min,s){}    void PrintDate_Time()    {        PrintDate();        PrintTime();    }};int main(){    TimeDate dt_a,dt_b(2014,5,20,9,30,0);    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;}