btowc - convert single byte to wide character
#include <wchar.h> wint_t btowc(int c);
The btowc() function returns the wide character converted from the single byte
c is EOF or not a valid multibyte sequence of length 1, it returns WEOF.
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of btowc() depends on the LC_CTYPE category of the current locale.
This function should never be used. It does not work for encodings which have state, and unnecessarily treats single bytes differently from multibyte sequences. Use either mbtowc(3) or the thread-safe mbrtowc(3) instead.
This page is part of release 4.15 of the Linux
man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.