Is there a way to detect an alphanumeric Unicode symbol?

Question

I have a Unicode string consisting of letters, digits and punctuation marks. Ho can I detect characters that are digits and letters (not necessarily ASCII) with a C++ standard library or Win32 API?

Answer 1

Another option is the Win32 API call GetStringTypeW()

Answer 2

iswdigit(), iswalpha() and iswalnum() are the functions you are looking for.

Cheers !