- OOP you only get if you use it.<p>- RAII you only get if you use it.<p>- exceptions you only get if you enable them.<p>- references. no overhead.<p>- vtables. you only get them if you need them.<p>- templates. no overhead runtime.<p>- C++ standard library. you only get it if you need it.<p>- what&#x27;s wrong with vector ? hash map ?