using System;

public class Program

{

    public static void Main()

    {

            int opt;   string a;

            label: 

            Console.WriteLine("Bodlogiin dugaaraa oruulna uu");

            opt = Convert.ToInt32(Console.ReadLine());

​

            switch (opt)

            {

                case 1:

                    Console.WriteLine("====Bod1==");

                    break;

                case 2:

                    Console.WriteLine("====Bod2==");

                    break;

                case 3:

                    Console.WriteLine("====Bod3==");

                    break;

                case 4:

                    Console.WriteLine("====Bod3==");

                    break;

​

                    default: Console.WriteLine("Buruu dugaar baina !!!!");

                    goto label;  

            }

                    Console.WriteLine("Dakhin ekhluulekh bol y tovchiig darna uu");

                    a = Console.ReadLine();

                    if (a == "y")  {       goto label;                    }

                    Console.ReadLine();  

    }

}