From: Frank on
Is <cctype> a standard header, or is it a Microsoft implementation of the
old <ctype.h> header? The reason that I'm suspicious is that I can't find
it at http://cppreference.com/.

I apologize if I'm asking this question in the wrong place, but I wanted to
use <cctype> in a program for school. However, I didn't want to use it if it
wasn't correct to use it. The teacher wouldn't mind, but...

One more question. When modern, correct headers don't exist, is it then
acceptable to use an old C-style header in a C++ program?

Thanks,
Frank


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