Re: delete an inherited class

1) I believe that
class square : public shape
{
  ~square()
}

should be instead of
class square : class shape
{
  ~square()

}

2) The destructor in base class is not virtual so
    the base class destructor is called not the derived class
destructor

3) There is not a single virtual function in the base class
    so using dynamic cast has no sense. A simple static cast will be
enough.

You should declare destructor virtual in the base class.

Thanks,
Alexey.

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