using System;

namespace inheritance1

{

    class Shape{

        protected int width, height;

        public void setWidth(int w)

        {

            width = w;

        }

        public void setHeight(int h)

        {

            height = h;

        }

    }

    class Rectangle : Shape

    {

        public int GetArea()

        {

            return width * height;

        }

    }

    public class ExecRectangle

    {

        public static void Main(string[] args)

        {

            Rectangle rect = new Rectangle();

            Shape shp = new Rectangle();

            //Shape instance will access only its methods over here

            rect.setWidth(1);

            rect.setHeight(2);

            Console.WriteLine(rect.GetArea());

        }

    }

}