public static void Main(string[] args)
        {
            CheckFile checkAdmin = new CheckFile();

            checkAdmin.checkAdmin();
            checkAdmin.checkDoctor();
            checkAdmin.checkNurse();

            Console.WriteLine("LOG-IN TO SYSTEM");
            Console.Write("Username:"******"Password:"******"Username or password is not correct !");
        }
        public void createnurse()
        {
            NurseClass nurse = new NurseClass();

            Console.WriteLine("New Nurse account creating");
            detector();
            nurse.nurse_username = username;
            nurse.nurse_password = password;
            nurse.nurse_name     = name;
            nurse.nurse_surname  = surname;
            nurse.nurse_pesel    = pesel;
            nurse.writeNurse();
        }