using System;

​

public class Shape

{

    string name;

    public Shape ()

    {

        name = "UNknown";

    }

    public Shape (string name)

    {

        this.name = name;

    }

    public void setName(string name)

    {

        this.name = name;

    }

​

    public string getName()

    {

        return name;

    }

}

​

public class Rectangle : Shape

{

    int length;

    int width;

    public Rectangle ()

    {

         length = 1;

         width = 1;

    }

    public Rectangle (String n, int a, int b)

    {

         setName(n);

         length = a;

         width = b;

    }

    public void setLength(int x)

    {

        length = x;

    }

​

    public int getLength()

    {

        return length;

    }

​

    public void setWidth(int y)

    {

        width = y;

    }

​

    public int getWidth()

    {

        return width;

    }

​

    public int getArea()

    {

        int area = length * width;

        return area;

    }

}

​

​

    public class Program

    {

        public static void Main()

        {

            Rectangle r1 = new Rectangle();

            Console.WriteLine("Name = '{0}', Length = {1} , Width = {2}" ,r1.getName(), r1.getLength(), r1.getWidth());

​

            Console.WriteLine("\n-----------Next OBJ---------------------\n");

            Rectangle r2 = new Rectangle("Rectangle 2", 4, 6);

            Console.WriteLine("Name = '{0}', Length = {1} , Width = {2}" ,r2.getName(), r2.getLength(), r2.getWidth());

        }

    }