if (Command == "PRINT"){
               File.open("file.txt", std::ios::in);
                while (!File.eof()) {
                    Train train_to_print;
                    File >> train_to_print;
                    PrintTrain(std::cout, train_to_print);
                    std::cout << std::endl;
                }
                File.close();
            }
std::istream& operator>>(std::istream& is, Train& train){
    int Data_ID, Number;
    std::string Name, Type;
    Date Departure_Date, Arrival_Date;
    Time Departure_Time, Arrival_Time;
    double Popularity_Rate;
    is >> Data_ID >> Name >> Number >> Type
       >> Departure_Date >> Departure_Time
       >> Arrival_Date >> Arrival_Time >> Popularity_Rate;
    train = Train(Data_ID,Name,Number,Type,Departure_Date,Departure_Time,Arrival_Date,Arrival_Time,Popularity_Rate);
    return is;
}

std::istream& operator>>(std::istream& is, Time& time){
    int mins, hours;
    std::cin >> hours >> mins;
    time = Time(hours,mins);
    return is;
}

std::istream& operator>>(std::istream& is, Date& date){
    int day, month, year;
    std::cin >> day >> month >> year;
    date = Date(day,month,year);
    return is;
}