Login

string username = Console.ReadLine();
var password = new string(username.ToCharArray().Reverse().ToArray());
int attempts = 0;

for (int i = 1; i <= 3; i++)
{
    string guess = Console.ReadLine();
    if (guess != password)
    {
        Console.WriteLine("Incorrect password. Try again.");
        attempts++;
        if (attempts == 3)
        {
            Console.WriteLine($"User {username} blocked!");
        }
    }
    else if (guess == password)
    {
        Console.WriteLine($"User {username} logged in.");
        break;
    }
}

//while (true)
//{
//    string guess = Console.ReadLine();
//    if (guess == password)
//    {
//        Console.WriteLine($"User {username} logged in.");
//        return;
//    }
//    else if (guess != password)
//    {
//        Console.WriteLine("Incorrect password. Try again.");
//        attempts++;
//        if (attempts == 3)
//        {
//            Console.WriteLine($"User {username} blocked!");
//            break;
//        }
//    }
//}