Message from C, C++ talks
> I've heard a lot about that is better to use old C90 standard. Correct me if I'm wrong.
well you're very very very wrong. yes there are these people who find it cool to hate on new features, but you'll just have to learn to ignore those. also if you're looking for anything game related C++ will likely be better (and for most things C++ would be better, so idk why you want to learn C, which is better than C++ only is select few cases). and for ide just use whatever suits you, CLion will work, so will vim (but some plug-ins would be handy)