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FPUTWC(3)			    Linux Programmer's Manual				FPUTWC(3)

       fputwc - write a wide character to a FILE stream

       #include <stdio.h>
       #include <wchar.h>

       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 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 non-locking counterparts, see unlocked_stdio(3).

       The fputwc function returns wc if no error occurred, or WEOF to indicate an error.

       Apart from the usual ones, there is

       EILSEQ Conversion of wc to the stream's encoding fails.

       ISO/ANSI C, UNIX98

       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.

       fgetwc(3), fputws(3), unlocked_stdio(3)

GNU					    1999-07-25					FPUTWC(3)
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