using System;

​

// Goal: Calls a method GetShape() which returns some time which can draw

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Calling GetShape()...");

        // Call the GetShape() method to get an object reference of some time which can draw

        <<SOME_TYPE>> = GetShape(1);

        // call the Draw() method of that object to draw the actual shape

        <<SOME_TYPE>>.Draw();

    }

    // Returns a type which can Draw() based on input param

    // 1 = Circle, 2 = Triangle

    public static <<SOME_TYPE>> GetShape(int val)

    {

        <<SOME_TYPE>> ret = null;

        //

        if(val == 1)

        {

            ret = new Circle();

        }

        else

        {

            ret = new Triangle();

        }

        return ret;

    }

}

​

public class Circle

{

    public void Draw()

    {

        Console.WriteLine("Drawing Circle");

    }

}

​

public class Triangle

{

    public void Draw()

    {

        Console.WriteLine("Drawing Triangle");

    }

}