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
EOF or not a valid multibyte sequence of length 1, it
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.
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