using System;

public class Program

{

    public static void Main()

    {

        string name ; 

            int num;

        Console.WriteLine("Hello, What is your name ?");

        name = Console.ReadLine();

        switch(name){

                case "LOUIS":

                case "Louis":

                case "louis":

                    Console.WriteLine("wow thats my first name to");

                    break;

​

             default:

                    Console.WriteLine();

                    Console.WriteLine("welcome " + name);

                    break;

        }

        Console.WriteLine(" write a number from 1-20 ");

            num = int.Parse (Console.ReadLine());

                switch (num){

                    case 0:

                case 2:

                case 4:

                case 6:

                case 8:

                case 10:

                case 12:

                case 14:

                    case 16:

                    case 18:

                    case 20:

                        Console.WriteLine("your number is even ");

                    break;

                    case 1:

                    case 13:

                    case 19:

                    case 3:

                    case 17:

                    case 5:

                    case 7:

                    case 15:

                    case 9:

                    case 11:

                        Console.WriteLine("your number is odd ");

                    break;

    }

}

}