How can a derived C++ class clone itself via a base pointer?

Question

Here\'s what I\'m trying to do (this code doesn\'t work):

class Base
{
    virtual Base *clone() { return new Base(this); }
    virtual void ID() { printf(\"         


        

Answer 1

Your example is incorrect and will not compile. Specifically this line:

Base bp = &d;

That may also be the root cause of your problem (you may be slicing your object), but I can't tell for certain without seeing working code.

You also have a problem where your two classes are not related (did you mean to write class Derived : public Base?)