Contraseña Aprende programación con ejercicios C# Sharp

using System;
public class Exercise30
{
    public static void Main()
    {
        int user, pass;

        do
        {
            Console.Write("Enter a user:  ");
            user = Convert.ToInt32(Console.ReadLine());

            Console.Write("Enter a password:  ");
            pass = Convert.ToInt32(Console.ReadLine());

            if ((user != 12) || (pass != 1234))
                Console.WriteLine("Login Error");

        }
        while ((user != 12) || (pass != 1234));

        Console.WriteLine("Login successful");
    }
}