using System;

public class Program

{

    public static void Main()

    {

        var enumVal = (Demo) 3;

        switch(enumVal){

            case Demo.First:

                Console.WriteLine("First");

                break;

            case Demo.Second:

                Console.WriteLine("Second");

                break;

            default:

                Console.WriteLine("Undefined");

                break;

        }

    }

}

public enum Demo{

  First,Second

}