Unicode Utf8

Unicode and UTF-8

Very comprehensive one-stop information resource on how you can use Unicode/UTF-8 on POSIX systems (Linux, Unix). You will find here both introductory information for every user, as well as detailed references for the experienced developer.
http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

Count number of chars in a c-"string"

The number of characters can be counted in C in a portable way using mbstowcs(NULL,s,0).

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