Sepples

Recently I've used C to code a project using SDL, and I think that if I were to start a serious, bigger project I'd really appreciate objects, thus I'm going to use C++ (or Objective-C, but I know nothing about it).
What are the most common pitfalls in C++ I should watch out for?

in most cases c++ isn't even needed.
'a serious, bigger project' like Linux kernel doesn't need it either.