FlyGrid.cpp

#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;


class Passenger {
private:
    string name;

public:
    Passenger() : name("") {}
    Passenger(const string& name) : name(name) {}

    string getName() const { return name; }
    void setName(const string& newName) { name = newName; }
    bool isEmpty() const { return name.empty(); }
};


class Seat {
private:
    int seatNumber;
    bool isBooked;
    Passenger passenger;

public:
    Seat() : seatNumber(0), isBooked(false), passenger() {}
    Seat(int number) : seatNumber(number), isBooked(false), passenger() {}

    void book(const Passenger& p) {
        isBooked = true;
        passenger = p;
    }

    void cancel() {
        isBooked = false;
        passenger.setName("");
    }

    bool getIsBooked() const { return isBooked; }
    int getSeatNumber() const { return seatNumber; }
    Passenger getPassenger() const { return passenger; }
};


class Flight {
private:
    static const int TOTAL_SEATS = 20;
    Seat seats[TOTAL_SEATS];

public:
    Flight() {
        for (int i = 0; i < TOTAL_SEATS; ++i) {
            seats[i] = Seat(i + 1);
        }
    }

    void displaySeats() const {
        cout << "\nSeat Layout:\n";
        for (int i = 0; i < TOTAL_SEATS; ++i) {
            cout << setw(3) << seats[i].getSeatNumber() << ": "
                << (seats[i].getIsBooked() ? "Booked " : "Free   ");

            if ((i + 1) % 5 == 0) cout << endl;
        }
        cout << endl;
    }

    void bookSeat(int seatNumber, const string& passengerName) {
        if (seatNumber < 1 || seatNumber > TOTAL_SEATS) {
            cout << "Invalid seat number.\n";
            return;
        }
        if (seats[seatNumber - 1].getIsBooked()) {
            cout << "Seat already booked.\n";
        }
        else {
            seats[seatNumber - 1].book(Passenger(passengerName));
            cout << "Seat " << seatNumber << " successfully booked.\n";
        }
    }

    void cancelBooking(int seatNumber) {
        if (seatNumber < 1 || seatNumber > TOTAL_SEATS) {
            cout << "Invalid seat number.\n";
            return;
        }
        if (!seats[seatNumber - 1].getIsBooked()) {
            cout << "Seat is already free.\n";
        }
        else {
            seats[seatNumber - 1].cancel();
            cout << "Seat " << seatNumber << " booking canceled.\n";
        }
    }

    void saveToFile(const string& filename) {
        ofstream file(filename);
        for (int i = 0; i < TOTAL_SEATS; ++i) {
            file << seats[i].getSeatNumber() << " "
                << seats[i].getIsBooked() << " "
                << seats[i].getPassenger().getName() << "\n";
        }
        file.close();
        cout << "Booking data saved to " << filename << endl;
    }

    void loadFromFile(const string& filename) {
        ifstream file(filename);
        if (!file) {
            cout << "No existing data found. Starting fresh.\n";
            return;
        }

        int number, booked;
        string name;

        while (file >> number >> booked) {
            file.ignore(); // Ignore space before name
            getline(file, name);
            if (number >= 1 && number <= TOTAL_SEATS) {
                if (booked) {
                    seats[number - 1].book(Passenger(name));
                }
                else {
                    seats[number - 1].cancel();
                }
            }
        }
        file.close();
        cout << "Booking data loaded from " << filename << endl;
    }
};


int main() {
    Flight flight;
    string filename = "seats.txt";
    flight.loadFromFile(filename);

    int choice;
    do {
        cout << "\n===== Flight Seat Booking Menu =====\n";
        cout << "1. Display Seats\n";
        cout << "2. Book a Seat\n";
        cout << "3. Cancel a Booking\n";
        cout << "4. Save Booking Data\n";
        cout << "5. Exit\n";
        cout << "Enter your choice: ";
        cin >> choice;

        switch (choice) {
        case 1:
            flight.displaySeats();
            break;
        case 2: {
            int seatNumber;
            string name;
            cout << "Enter seat number to book: ";
            cin >> seatNumber;
            cout << "Enter passenger name: ";
            cin.ignore();
            getline(cin, name);
            flight.bookSeat(seatNumber, name);
            break;
        }
        case 3: {
            int seatNumber;
            cout << "Enter seat number to cancel: ";
            cin >> seatNumber;
            flight.cancelBooking(seatNumber);
            break;
        }
        case 4:
            flight.saveToFile(filename);
            break;
        case 5:
            flight.saveToFile(filename);
            cout << "Exiting program. Goodbye!\n";
            break;
        default:
            cout << "Invalid choice. Please try again.\n";
        }

    } while (choice != 5);

    return 0;
}