12周 项目四

#include <iostream>
using namespace std;
class Date
{
public:
    Date(int y=0,int m=0,int d=0);
    void SetDate(int y,int m,int d);
    void PrintDate();
protected:
    int year;
    int month;
    int day;
};
Date::Date(int y,int m,int d):year(y),month(m),day(d) {}
void Date::SetDate(int y,int m,int d)
{
    year=y;
    month=m;
    day=d;
}
void Date::PrintDate()
{
    cout<<year<<"/"<<month<<"/"<<day;
}
class Time
{
public:
    Time(int h=0,int mi=0,int s=0);
    void SetTime(int h,int mi,int s);
    void PrintTime();
protected:
    int hour,minute,second;
};
Time::Time(int h,int mi,int s):hour(h),minute(mi),second(s) {}
void Time::SetTime(int h,int mi,int s)
{
    hour=h;
    minute=mi;
    second=s;
}
void Time::PrintTime()
{
    cout<<hour<<":"<<minute<<":"<<second<<endl;
}
class TimeDate:public Time,public Date
{
public:
    TimeDate(int y=0,int m=0,int d=0,int h=0,int mi=0,int s=0);
    void PrintDate_Time();
};
TimeDate::TimeDate(int y,int m,int d,int h,int mi,int s):Date(y,m,d),Time(h,mi,s){}
void TimeDate::PrintDate_Time()
{
    PrintDate();
    cout<<" ";
    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;
}