时间类--多重继承

/*
*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;
}