10 Unique C++ Projects with Source Code

				#include <iostream>
#include <vector>
#include <string>

using namespace std;

// Car class representing a car object
class Car {
private:
    string model;
    string licensePlate;
    bool available;

public:
    Car(const string& mdl, const string& lic) : model(mdl), licensePlate(lic), available(true) {}

    const string& getModel() const { return model; }
    const string& getLicensePlate() const { return licensePlate; }
    bool isAvailable() const { return available; }

    void rentCar() {
        if (available) {
            available = false;
            cout << "Car rented successfully." << endl;
        } else {
            cout << "Car is not available for rent." << endl;
        }
    }

    void returnCar() {
        if (!available) {
            available = true;
            cout << "Car returned successfully." << endl;
        } else {
            cout << "Car is already available." << endl;
        }
    }
};

// CarRentalSystem class representing the car rental system
class CarRentalSystem {
private:
    vector<Car> cars;

public:
    void addCar(const string& model, const string& licensePlate) {
        cars.emplace_back(model, licensePlate);
        cout << "Car added successfully." << endl;
    }

    void rentCar(const string& licensePlate) {
        for (auto& car : cars) {
            if (car.getLicensePlate() == licensePlate) {
                car.rentCar();
                return;
            }
        }
        cout << "Car not found." << endl;
    }

    void returnCar(const string& licensePlate) {
        for (auto& car : cars) {
            if (car.getLicensePlate() == licensePlate) {
                car.returnCar();
                return;
            }
        }
        cout << "Car not found." << endl;
    }

    void displayAvailableCars() {
        cout << "Available Cars:" << endl;
        for (const auto& car : cars) {
            if (car.isAvailable()) {
                cout << "Model: " << car.getModel() << ", License Plate: " << car.getLicensePlate() << endl;
            }
        }
    }
};

int main() {
    CarRentalSystem rentalSystem;

    int choice;
    do {
        cout << "\nCar Rental System" << endl;
        cout << "1. Add Car" << endl;
        cout << "2. Rent Car" << endl;
        cout << "3. Return Car" << endl;
        cout << "4. Display Available Cars" << endl;
        cout << "5. Exit" << endl;
        cout << "Enter your choice: ";
        cin >> choice;

        switch(choice) {
            case 1: {
                string model, licensePlate;
                cout << "Enter car model: ";
                cin.ignore();
                getline(cin, model);
                cout << "Enter license plate: ";
                getline(cin, licensePlate);
                rentalSystem.addCar(model, licensePlate);
                break;
            }
            case 2: {
                string licensePlate;
                cout << "Enter license plate of the car to rent: ";
                cin.ignore();
                getline(cin, licensePlate);
                rentalSystem.rentCar(licensePlate);
                break;
            }
            case 3: {
                string licensePlate;
                cout << "Enter license plate of the car to return: ";
                cin.ignore();
                getline(cin, licensePlate);
                rentalSystem.returnCar(licensePlate);
                break;
            }
            case 4: {
                rentalSystem.displayAvailableCars();
                break;
            }
            case 5: {
                cout << "Exiting Car Rental System..." << endl;
                break;
            }
            default: {
                cout << "Invalid choice! Please try again." << endl;
                break;
            }
        }
    } while (choice != 5);

    return 0;
}