nighthours.h

酒吧管理系统！！有简单基本功能

//Nighthours
#ifndef NIGHTHOURS
#define NIGHTHOURS
class Nighthours:public Np
{
 public:
     Nighthours(int,double,double);
	 ~Nighthours(){};
	 void upgrade(double);
	 virtual double counting(double);
	 virtual void print() const;
 private:
	 double finalexpense,actualityexpense;
};
#endif