fputwc - write a wide character to a FILE stream
SYNOPSIS
#include <stdio.h>
#include <wchar.h>
wint_t fputwc (wchar_t wc, FILE* stream);
wint_t putwc (wchar_t wc, FILE* stream);
DESCRIPTION
The fputwc function is the wide-character equivalent of
the fputc 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 evalu
ate its argument more than once. There is no reason ever
to use it.
RETURN VALUE
The fputwc function returns wc if no error occurred, or
WEOF to indicate an error.
ERRORS
Apart from the usual ones, there is
EILSEQ Conversion of wc to the stream's encoding fails.
CONFORMING TO
ISO/ANSI C, UNIX98
SEE ALSO
fgetwc(3), fputws(3)
NOTES
The behaviour of fputwc depends on the LC_CTYPE category
of the current locale.
In the absence of additional information passed to the
fopen call, it is reasonable to expect that fputwc will
actually write the multibyte sequence corresponding to the
wide character wc.
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