#include <iostream>

using namespace std;

class shape2D
{
   public:
      void setWidth(int w)
      {
         width = w;
      }
      void setHeight(int h)
      {
         height = h;
      }
      shape2D(int wd=1, int ht=1) {
        width =  wd;
        height = ht;
        cout << "shape2D constructed.." << endl;
      }
      void prtShape() {
        cout << width << "," << height << endl;
      }
   protected:
      int width;
      int height;
};// class shape2D

class Rectangle: public shape2D
{
   public:
       Rectangle(int wd, int ht) {
           width=wd;
           height=ht;
           cout << "Rectangle constructed, with width,height as " << width << "," << height << endl;
       }
      int getArea()
      {
         return (width * height);
      }
};// class Rectangle

class Triangle: public shape2D
{
   public:
       Triangle(int wd, int ht) {
           width=wd;
           height=ht;
           cout << "Triangle constructed, with width,height as " << width << "," << height << endl;
       }
      int getArea()
      {
         return 0.5*(width * height);
      }
};// class Triangle

int main()
{

    Rectangle r(3,4);
    int rA = r.getArea();
    cout << "Area: " << rA << endl;

    Triangle t(3,4);
    int tA = t.getArea();
    cout << "Area: " << tA << endl;

    return 0;
}