http://1.1.1.1/bmi/imgland.net/file/cT8unPz8BfCMunbwsunQT8BUQ.png"Deniel Buzäs ... i see, you use m_ -prefix... so i guess you work with member-variables.... hope these member-vars are private, because beware of thread-safety of the above code"
moreover,
well, of course I do, it's Object-oriented programming language, isn't it? of course I work with member variables and I'm not a fool, nor an idiot to use m_ in public or protected access control modifiers or rather levels, I use m_ in the private section and then return with it's value with a public function within the same class.
by the way, to fix you, m_ is NOT a prefix, it's just belongs to the programming naming convention... for example (e.g.):
an example for prefix: --i; or --C;
an example for postfix: i++; or C++;