Question

I have two classes, A and B like this :

class A
{
public:
    A(int i)
    {
        this->i = i;
    }
private:
    int i;
};

class B
{
public:
    B()
    {
        i = 0;
        a = new A(i);
        i++;
        // i = 1
        // a->i must be 1
    }

private:
    A* a;
    int i;
};

I tri to share a member between the two objects.
I want when i is modified in B, i have to be modified in A.
How can I doing something like that ? It is possible by reference ?
I hope I was clear.
Thanks.

Answer 1

Yes, it’s possible by reference, but then you run into scoping issues.

You can also have a std::shared_ptr to share variables between classes.