Section (3) fputwc
fputwc, putwc — write a wide character to a FILE stream
#include <stdio.h> #include <wchar.h>
fputwc() function is the
wide-character equivalent of the fputc(3) function. It
writes the wide character
ferror(stream) becomes true,
WEOF. If a
wide-character conversion error occurs, it sets
errno to EILSEQ and returns
WEOF. Otherwise, it returns
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).
wc if no
error occurred, or
indicate an error. In the event of an error,
errno is set to indicate the cause.
Apart from the usual ones, there is
wcto the stream_zsingle_quotesz_s encoding fails.
For an explanation of the terms used in this section, see attributes(7).
The behavior of
depends on the
category of the current locale.
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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Copyright (c) Bruno Haible <haibleclisp.cons.org>
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GNU glibc-2 source code and manual
Dinkumware C library reference http://www.dinkumware.com/
OpenGroup_zsingle_quotesz_s Single UNIX specification http://www.UNIX-systems.org/online.html