Flights_Kursova

#include <iostream>
#include <string>
#include <fstream>
#include <random>
#include <conio.h>

using namespace std;

struct Flights {
    size_t id;

    string pilot_name;

    int day_of_the_month;

    int passengers_1st_class;
    int passengers_2nd_class;

    int price_1st_class;
    int price_2nd_class;
};

void create_file(Flights[], size_t);
void edit_file(Flights[], size_t);
void flights_for_a_pilot(Flights[], size_t);
void all_flights(Flights[], size_t);

int stefan() {

    size_t choice, array_size;

    cout << "Number of flights: ";
    cin >> array_size;

    Flights *flights = new Flights[array_size];

    do {
        system("cls");
        cout << "Menu: \n";
        cout << "[1] Enter information about flights \n";
        cout << "[2] Edit information about flights \n";
        cout << "[3] Flights for a pilot \n";
        cout << "[4] All flights for the month\n\n";
        cout << "[0] Exit\n\n";

        cout << "Your choice:";
        cin >> choice;

        switch (choice) {
            case 1:
                system("cls");

                create_file(flights, array_size);

                break;
            case 2:
                system("cls");

                edit_file(flights, array_size);

                cout << "\n\nFile modified successfully! -- Press any key to get back to the menu!";
                _getch();
                break;
            case 3:
                system("cls");

                flights_for_a_pilot(flights, array_size);

                cout << "\n\nPress any key to get back to the menu!";
                _getch();
                break;
            case 4:
                system("cls");

                all_flights(flights, array_size);

                cout << "\n\nPress any key to get back to the menu!";
                _getch();
                break;
        }
    } while (choice != 0);

    return 0;
}

void create_file(Flights array[], size_t array_size) {

    fstream file;

    random_device rd;
    mt19937 generator(rd());
    uniform_int_distribution<> dist(1, 1000);

    file.open("flights.dat", ios::binary | ios::out);

    for (size_t i = 0; i < array_size; i++) {

        cin.ignore();

        array[i].id = dist(generator);

        cout << "Enter pilot's full name: ";
        getline(cin, array[i].pilot_name);

        cout << "Enter flight #" << array[i].id << " day of the month: ";
        cin >> array[i].day_of_the_month;

        cout << "Enter flight #" << array[i].id << " 1st class passengers: ";
        cin >> array[i].passengers_1st_class;

        cout << "Enter flight #" << array[i].id << " 2nd class passengers: ";
        cin >> array[i].passengers_2nd_class;

        cout << "Enter flight #" << array[i].id << " 1st class price: ";
        cin >> array[i].price_1st_class;

        cout << "Enter flight #" << array[i].id << " 2nd class price: ";
        cin >> array[i].price_2nd_class;
    }

    file.write(reinterpret_cast<char *> (&array), array_size * sizeof(array));

    file.close();
}

void edit_file(Flights array[], size_t array_size) {

    fstream file;

    file.open("flights.dat", ios::binary | ios::in);

    file.read(reinterpret_cast<char *> (&array), array_size * sizeof(array));

    size_t flight_id;

    cout << "Enter flight id to search by: ";
    cin >> flight_id;

    cin.ignore();

    file.close();

    for (size_t i = 0; i < array_size; i++) {
        if (array[i].id == flight_id) {
            cout << "--Edit number of passengers--\n\n";

            cout << "Enter flight #" << array[i].id << " 1st class passengers: ";
            cin >> array[i].passengers_1st_class;

            cout << "Enter flight #" << array[i].id << " 2nd class passengers: ";
            cin >> array[i].passengers_2nd_class;
        }
    }


    file.open("flights.dat", ios::binary | ios::out);

    file.write(reinterpret_cast<char *> (&array), array_size * sizeof(array));

    file.close();
}

void flights_for_a_pilot(Flights array[], size_t array_size) {

    fstream file;

    string pilot_name;

    bool found = false;

    file.open("flights.dat", ios::binary | ios::in);

    file.read(reinterpret_cast<char *> (&array), array_size * sizeof(array));

    cin.ignore();

    cout << "Enter pilot name to search by: ";
    getline(cin, pilot_name);

    for (size_t i = 0; i < array_size; i++) {
        if (strcmp(array[i].pilot_name.c_str(), pilot_name.c_str()) == 0) {
            cout << "--Information about pilot name " << pilot_name << "--\n\n";

            cout << "Flight's number: " << array[i].id << endl;
            cout << "Flight's day of the month: " << array[i].day_of_the_month << endl;

            cout << "Flight's passengers 1st class: " << array[i].passengers_1st_class << endl;
            cout << "Flight's passengers 2nd class: " << array[i].passengers_2nd_class << endl;

            cout << "Flight's price 1st class: " << array[i].price_1st_class << endl;
            cout << "Flight's price 2nd class: " << array[i].price_2nd_class << endl << endl;

            found = !found;
        }
    }

    if (!found)
        cout << "\nNo records found in the database!\n";

    file.close();
}

void all_flights(Flights array[], size_t array_size) {

    fstream file;

    file.open("flights.dat", ios::binary | ios::in);

    file.read(reinterpret_cast<char *> (&array), array_size * sizeof(array));

    for (size_t i = 0; i < array_size; i++) {
        cout << "Flight's number: " << array[i].id << endl;
        cout << "Flight's pilot name: " << array[i].pilot_name << endl;

        cout << "Flight's day of the month: " << array[i].day_of_the_month << endl;
        cout << "Flight's passengers 1st class: " << array[i].passengers_1st_class << endl;
        cout << "Flight's passengers 2nd class: " << array[i].passengers_2nd_class << endl;

        cout << "Flight's price 1st class: " << array[i].price_1st_class << endl;
        cout << "Flight's price 2nd class: " << array[i].price_2nd_class << endl << endl;
    }

    file.close();
}