fputwc, putwc - write a wide character to a FILE stream
wint_t fputwc(wchar_t wc, FILE *stream);
wint_t putwc(wchar_t wc, FILE *stream);
The fputwc() function is the wide-character equivalent of the
fputc(3) function. It writes the wide character wc to
stream. If ferror(stream) becomes true, it returns WEOF.
If a wide-character conversion error occurs, it sets errno to
EILSEQ and returns WEOF. Otherwise, it returns wc.
The putwc() function or macro functions identically to
fputwc(). It may be implemented as a macro, and may evaluate its
argument more than once. There is no reason ever to use it.
For nonlocking counterparts, see unlocked_stdio(3).
On success, fputwc() function returns wc. Otherwise, WEOF
is returned, and errno is set to indicate the error.
Apart from the usual ones, there is
For an explanation of the terms used in this section, see attributes(7).
- Conversion of wc to the stream's encoding fails.
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of fputwc() depends on the LC_CTYPE category of the
|fputwc (), putwc ()
In the absence of additional information passed to the
fopen(3) call, it is reasonable to expect that fputwc() will
actually write the multibyte sequence corresponding to the wide character
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