// SimpleQuality.h

#ifndef SimpleQuality_H
#define SimpleQuality_H

// SimpleQuality is a concrete subclass of Quality.  It is always
// valid and uses a double as the measure of quality.  Smaller
// values are better.
//

#include "Quality.h"

class SimpleQuality : public Quality {

private:  // attributes

  // discriminant
  double _value;

private:  // attributes

  // define the type
  static void* _mytype;

private:  // methods

  // return the type
  void* get_type() const { return _mytype; };

  // comparison
  bool _is_better_than(const Quality& quality) const;

public:

  // constructor
  SimpleQuality(double value);

  bool is_valid() const { return true; };

};

#endif