#include<iostream>
using namespace std;

class Time 
{
    private: 
       int sec;
       int min;
       int hour;
 
    public:
       Time(int h =0, int m=0, int s =0){ setTime(h,m,s);}
       void setTime(int h, int m, int s)
            { hour = h; min = m; sec = s; }
       void printTime();
       void inc_second();          
};

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

void Time::inc_second()
{
     sec++;
     if (sec == 60 )
     {
             sec= 0;
             min++;
     }
     if (min == 60 )
     {
        min = 0;
        hour++;
     }
     if (hour == 24)
       hour = 0;
}
int main()
{
   Time t1(23, 59, 59);
   t1.printTime();
   t1.inc_second();
   t1.printTime();
   system("pause");
   return 0;
}