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 fer-
ror(stream) becomes true, it returns WEOF. If a wide-character conver-
sion 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).
The fputwc() function returns wc if no error occurred, or WEOF to indi-
cate an error.
Apart from the usual ones, there is
EILSEQ Conversion of wc to the stream's encoding fails.
The behavior of fputwc() depends on the LC_CTYPE category of the cur-
In the absence of additional information passed to the fopen(3) call,
it is reasonable to expect that fputwc() will actually write the multi-
byte sequence corresponding to the wide character wc.
fgetwc(3), fputws(3), unlocked_stdio(3)
This page is part of release 3.35 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://man7.org/linux/man-pages/.
GNU 1999-07-25 FPUTWC(3)
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