circle1.h

来自「经典的<<C how to program>一书第三版的例程。」· C头文件 代码 · 共 39 行

// Fig. 20.1: circle1.h
// Definition of class Circle
#ifndef CIRCLE1_H
#define CIRCLE1_H
#include "point1.h"

class Circle : public Point {
public:
   // default constructor
   Circle( double r = 0.0, int x = 0, int y = 0 );

   void setRadius( double );
   double getRadius() const;
   virtual double area() const;
   virtual void printShapeName() const { cout << "Circle: "; }
   virtual void print() const;
private:
   double radius;   // radius of Circle
};

#endif



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