// file: circleComposition.h
// CircleComposition class derived from Point class 
// adds private radius to base class [x,y] coordinates
#ifndef CIRCLECOMPOSITION_H
#define CIRCLECOMPOSITION_H

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

class CircleComposition{

public:

   // default constructor
   CircleComposition( double = 0, double = 0, double = 0.0 );  

   void setX( double );    // set x in coordinate pair
   double getX() const;    // return x from coordinate pair
   void setY( double );    // set y in coordinate pair
   double getY() const;    // return y from coordinate pair

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

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

   void print() const;         // output CircleComposition object

private: 
   double radius;  // CircleComposition's radius
	 Point center; //center of CircleComposition of type Point

}; // end class CircleComposition

#endif 

/* to complement the example from Chapter 9, Deitel & Deitel: C++ How to Program. Fourth edition.
 * Prentice Hall, 2003. 
 */