using System;

public class Program

{

    public static void Main()

    {

        AccountType accountType = AccountType.Admin;

        Console.WriteLine($"Hello World {accountType} , {GetUserFriendlyName(1)}");

    }

    private static string GetUserFriendlyName(byte accountTypeId)

    {

        Enum.TryParse(accountTypeId.ToString(), out AccountType accountType );

            switch(accountType)

            {

                case AccountType.Admin:

                        return "I am admin";

                case AccountType.User:

                        return "I am user";

                default:

                    return "I dont know you";       

            }

    }

    public enum AccountType{

        User,

        Admin

    }

}