05. Login

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _05Login
{
    class Program
    {
        static void Main(string[] args)
        {
            string username = Console.ReadLine();
            string password = "";
            for (int i = username.Length - 1; i >= 0; i--)
            {
                password += username[i];
            }
            string currentPassword = Console.ReadLine();
            int invalidPassAttempt = 1;
            while (currentPassword != password)
            {
                Console.WriteLine("Incorrect password. Try again.");
                invalidPassAttempt++;
                if (invalidPassAttempt == 4)
                {
                    Console.WriteLine($"User {username} blocked!");
                    return;
                }
                currentPassword = Console.ReadLine();
            }

                Console.WriteLine($"User {username} logged in.");

        }

    }
}