What exactly is nullptr?

Question

We now have C++11 with many new features. An interesting and confusing one (at least for me) is the new nullptr.

Well, no need anymore for the nasty mac

Answer 1

nullptr can't be assigned to an integral type such as an int but only a pointer type; either a built-in pointer type such as int *ptr or a smart pointer such as std::shared_ptr

I believe this is an important distinction because NULL can still be assigned to both an integral type and a pointer as NULL is a macro expanded to 0 which can serve as both an initial value for an int as well as a pointer.