// circle2.h
#ifndef CIRCLE2_H
#define CIRCLE2_H
//
// Define a class that can be used to get objects of type Circle.
// A circle is a shape, so it makes sense for Circle2 to inherit Shape2.
// A class defines a data structure and the member functions
// that operate on the data strcuture.
// The name of the class becomes a type name.

#include "shape2.h" 
class Circle2 : public Shape2      // <-- the colon ":" means "inherit"
              // the 'public' part should be first, the user interface
              // the 'private' part should be last, the safe data
{
  public:
    Circle2(double X, double Y, double R);  // a constructor
    void Show();                            // a member function
    void Set(double R);                     // set a new radius
                                            // by inheritance  Move  is here
  private:
    double radius;  // by inheritance Xcenter and Ycenter are here
};  // end Circle2

#endif  // CIRCLE2_H