Class sizes with virtual inheritance in C++

Question

#include

using namespace std;

class abc
{
    int a;
};
class xyz : public virtual abc
{
    int b;
};

int main()
{
    abc obj;
    xyz obj1;
            


        

Answer 1

With virtual base classes, the position of the base object relative to an instance of the derived object is not always the same, so there is a pointer that tracks that.