class Time {
public:
   Time(int h = 0, int m = 0, int s = 0);
   void setHour(int h);
   void setMinute(int m);
   void setSecond(int s);
   int getHour() const;
   int getMinute() const;
   int getSecond() const;
   void tick();
private:
   int hour;
   int minute;
   int second;
};