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 createdoctor()
        {
            DoctorClass doctor = new DoctorClass();

            Console.WriteLine("New Doctor account creating");
            detector();
            detectorPwz();
            doctor.doctor_username  = username;
            doctor.doctor_password  = password;
            doctor.doctor_name      = name;
            doctor.doctor_surname   = surname;
            doctor.doctor_pesel     = pesel;
            doctor.doctor_specialty = specialty;
            doctor.doctor_pwz       = pwz;
            doctor.writeDoctor();
        }