C++ has roughly the same undefined behaviors as C, plus a bunch of additional ones for the C++ specific features. Also, you'd be surprised how many stubborn C

C++ has roughly the same undefined behaviors as C, plus a bunch of additional ones for the C++ specific features. Also, you'd be surprised how many stubborn C programmers apparently think that mutable global variables are an excellent and convenient time-saver. (Not that C++ programmers do inherently any better here, cf. Singleton)