public static void Main()
Console.WriteLine("Bodlogiin dugaaraa oruulna uu");
opt = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("====Bod1==");
Console.WriteLine("====Bod2==");
Console.WriteLine("====Bod3==");
Console.WriteLine("====Bod3==");
default: Console.WriteLine("Buruu dugaar baina !!!!");
Console.WriteLine("Dakhin ekhluulekh bol y tovchiig darna uu");
if (a == "y") { goto label; }