#include <iostream>

using namespace std;

class ShapeT {
  public:
    virtual void Draw(void) const = 0;
    virtual float Area(void) const  = 0;
    virtual float Perimeter(void) const  = 0;
};

class Rectangle: public ShapeT {
   public:
      Rectangle(float w, float h): width(w), height(h) { }

      void Draw(void) const override {
          cout << "Drawing a rectangle" << endl;
      }

      float Area(void) const override {
          return width * height;
      }

      float Perimeter(void ) const override {
          return 2*width + 2*height;
      }

   private:
      float width;
      float height;
};

class Circle: public ShapeT {
   public:
       Circle(float r): radius(r) { }
   private:
       float radius;
};

int main() {
    //ShapeT shape;
    Rectangle r(1,2);
    //Circle c(2);

    return 0;
}