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