// 22.5HV2 Software Engineering II
// Unit 3 Exercise 3

#include <iostream.h>  // needed for ostream and istream

class Change {
   friend ostream& operator<<(ostream&, const Change&);
   friend istream& operator>>(istream&, Change&);
public:
   Change();
   Change(float);
   Change(int,int,int,int,int,int,int);
   Change& operator+=(const Change&);
   Change& operator-=(float);
//   bool operator<(const Change&);
   operator float() const;
private:
   int pence() const;  // NOTE private function
   int  one_p, two_p, five_p, ten_p, twenty_p, fifty_p, pound;
};