// 22.5HV2 Software Engineering II
// Unit 3 Exercise 1
#include <iostream.h>

class Clock {
   friend ostream& operator<<(ostream&,const Clock&);
public:

   Clock(int=0,int=0,int=0);
   Clock& operator++(int); // postfix increment, i.e timer++
   Clock& operator--(int); // postfix decrement, i.e. timer--
private:
   int hour, minute, second;
   void normalise();
};