// Fig. 10.16: circle.h
// Circle class contains x-y coordinate pair and radius.
#ifndef CIRCLE_H
#define CIRCLE_H

#include "point.h"  // Point class definition

class Circle : public Point {

public:

   // default constructor
   Circle( int = 0, int = 0, double = 0.0 );  

   void setRadius( double );   // set radius
   double getRadius() const;   // return radius

   double getDiameter() const;       // return diameter
   double getCircumference() const;  // return circumference
   virtual double getArea() const;   // return area

   // return name of shape (i.e., "Circle")
   virtual string getName() const;

   virtual void print() const;  // output Circle object

private: 
   double radius;  // Circle's radius

}; // end class Circle

#endif 

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