#ifndef _HEATING_H_ #define _HEATING_H_ #include "GeneralDevice.h" #include //using std::istream; using std::ostream; class Heating : public GeneralDevice { //friend ostream &operator<<( ostream&, const Heating& ); public: Heating(); Heating(char *); virtual ~Heating(); virtual void operator++(int); virtual void operator--(int); virtual void print(); private: float temperature; }; #endif //_HEATING_H_