Then only use the ones that do guarantee this. You can also make use of C libraries, but still have access to some nice C++ features for your code. Since C++ l

Then only use the ones that do guarantee this. You can also make use of C libraries, but still have access to some nice C++ features for your code. Since C++ lets you omit language features until you basically have plain C, you get to choose what level of support you can live with.