FPUTWC (3)
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 evaluate 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
SEE ALSO
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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