C++: What is the size of an object of an empty class?

Question

I was wondering what could be the size of an object of an empty class. It surely could not be 0 bytes since it should be possible to reference and

Answer 1

#include
using namespace std;


    class Empty { };
    int main()
    {
        Empty* e1 = new Empty;
        Empty* e2 = new Empty;

        if (e1 == e2)
            cout << "Alas same address of two objects" << endl;
        else
            cout << "Okay it's Fine to have different addresses" << endl;

        return 0;
    }

Output: Okay it's Fine to have different addresses

Returning size 1 ensures that the two objects will not have the same address.