cylinder.h

来自「潭浩强 C++教程 红皮封面的配套相关习题书的习题答案。 1~14章全有」· C头文件 代码 · 共 16 行

//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;
};