singletonprototype.cpp

#include <iostream>
#include <string>

using namespace std;

class Engine {
private:
    string type;
public:
    Engine(string t = "Petrol") : type(t) {}
    string getType() const { return type; }
};

class Gearbox {
private:
    string type;
public:
    Gearbox(string t = "Manual") : type(t) {}
    string getType() const { return type; }
};

class Manufacturer {
private:
    string name;
public:
    Manufacturer(string n = "Unknown") : name(n) {}
    string getName() const { return name; }
};

class Wheels {
private:
    int count;
public:
    Wheels(int c = 4) : count(c) {}
    int getCount() const { return count; }
};

class Color {
private:
    string value;
public:
    Color(string v = "White") : value(v) {}
    string getValue() const { return value; }
    void setValue(string v) { value = v; }
};

class Car {
private:
    Engine engine;
    Gearbox gearbox;
    Manufacturer manufacturer;
    Wheels wheels;
    Color color;
public:
    Car(Engine e, Gearbox g, Manufacturer m, Wheels w, Color c)
        : engine(e), gearbox(g), manufacturer(m), wheels(w), color(c) {}

    Car* clone() const {
        return new Car(*this);
    }

    void setColor(string c) {
        color.setValue(c);
    }

    void show() const {
        cout << "Engine: " << engine.getType() << endl;
        cout << "Gearbox: " << gearbox.getType() << endl;
        cout << "Manufacturer: " << manufacturer.getName() << endl;
        cout << "Wheels: " << wheels.getCount() << endl;
        cout << "Color: " << color.getValue() << endl;
    }
};

int main() {
    Car car1(
        Engine("Diesel"),
        Gearbox("Automatic"),
        Manufacturer("BMW"),
        Wheels(4),
        Color("Black")
    );

    cout << "Original car:" << endl;
    car1.show();

    cout << endl;

    Car* car2 = car1.clone();
    car2->setColor("Red");

    cout << "Cloned car:" << endl;
    car2->show();

    delete car2;

    return 0;
}