OJ18

#include <iostream>

using namespace std;
class Time;
class Date
{public :
Date(){}
Date(int y,int m,int d):year(y),month(m),day(d){}
friend class Time;

private:
int year,month,day;

 

};
class Time
{public :
Time(){}
Time(int h,int m,int s):hour(h),minute(m),second(s){}

 

  void display(const Date &d)
  {

  cout<<d.year<<"/"<<d.month<<"/"<<d.day<<endl;
    cout<<hour<<":"<<minute<<":"<<second<<endl;

  }

private:

int hour,minute,second;

 

};

 

int main()

{

    int year,month,day;

    cin>>year>>month>>day;

    Date d1(year,month,day);

    int hour,minute,second;

    cin>>hour>>minute>>second;

    Time t1(hour,minute,second);

    t1.display(d1);

    return 0;

}