He thinks that C++ is just a little more different language from C. He will continue programming C masked by C++. No advanced use of classes, the structs are considered less powerful than classes, namespace, new headers, templates, nothing of these new elements are used. He will continue declaring integer vars without int, he will not provide functions prototypes. He will use malloc and free, unsafe pointers and preprocessor to define inline functions. This is just a small list ;)