Shallow & Deep Copy in OOPs

  #include <iostream>

using namespace std;

class Car{

    public:

        string name;

        string color;

        int *mileage;

    Car(string name, string color) {

        this->name = name;

        this->color = color;

        mileage = new int; // dynamic allocation

        *mileage = 12; // value allocated

    }

    Car(Car &original) {

        cout << "copying original to new..\n";

        name = original.name;

        color = original.color;

        mileage = new int; // yeh line likhne se , new memory allocate hogi

        *mileage = *original.mileage; // memory address copied from previous memory of mileage

    }

   

// 12 and 12 because * and * pointer laga hai  this is diff. between shallow n deep copy, to revise watch again for concept clarity..

};

int main() {

    Car c1("maruti 800", "white");

    Car c2(c1);

    cout << c2.name << endl;

    cout << c2.color << endl;

    cout << *c2.mileage << endl;

    *c2.mileage = 10; // changed to 10 (my mistake : remember to use * )

    cout << *c1.mileage << endl; // 10

    return 0;

}