cylinder.h

最新版谭浩强《c++语言程序设计》所有习题的原代码

//习题12.1中的cylinder.h头文件
//CYLINDER.H
#include "circle.h"
class Cylinder:public Circle
{public:
  Cylinder (float x=0,float y=0,float r=0,float h=0);
  void setHeight(float);
  float getHeight() const;
  float area() const;
  float volume() const;
  friend ostream& operator<<(ostream&,const Cylinder&);
 protected:
  float height;
};