using System;

//parent class

class Shape

{

    //change the ACCESS MODIFIER to protected

    protected int height;

    protected int width;

    //constructor---->method to input the values

    public void input(int x, int y)

    {

        height = x;

        width = y;

    }

}

//child class

class Rectangle : Shape

{

    //method

    public void printInfo()

    {

        Console.WriteLine(height);

        Console.WriteLine(width);

        Console.WriteLine(height*width);        

    }

}

​

public class Program

{

    public static void Main()

    {

        Rectangle rec1 = new Rectangle();

        rec1.input(2,3);//from the parent class

        rec1.printInfo();//from the child class

    }

}