Re: References

Supposing I have something like this below:
class Packer
{
public:
    Packer(int& x) : x(x) {}
    int& x;
    void packData(char *);
};

class Packet
{
public:
    int x;
    Packer p;
    Packet(int x) : x(x), p(x) {}
};

int main() {
    Packet p1(10);
    cout << p1.x << " and " << p1.p.x << endl;
    p1.x = 11;
    cout << p1.x << " and " << p1.p.x << endl;
    return 0;
}

so the Packer actually only have a subset of the attributes in Packet
and some more methods.

I thought that this actually would work, but actually I get
10 and 10
11 and 0

but why, should it not "follow" the what it points?
Or at worst keep the old value? Where does the 0 comes from now??

In general I'm not wasting any memory with this right?