#include<iostream>
using namespace std;

class Time 
{
    private: 
       int sec;
       int min;
       int hour;
 
    public:

       Time(int h, int m, int s){ hour = h, min = m, sec = s;}
       Time(int h, int m){ hour = h, min = m, sec = 0;}
       Time(int h){ hour = h, min = 0, sec = 0;}
       void setTime(int h, int m, int s)
            { hour = h; min = m; sec = s; }
       void printTime();          
};

void Time::printTime()
{
     cout << hour <<":";
     cout << min <<":";
     cout << sec <<endl;
}

int main()
{
   Time t1(4, 37, 10);
   Time t2(12, 20);
   Time t3(9);
   t1.printTime();
   t2.printTime();
   t3.printTime();
   system("pause");
   return 0;
}