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man:putwc

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

NAME

     fputwc, putwc - 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(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.   Other-
     wise, 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).

RETURN VALUE

     The fputwc() function returns wc if no error occurred, or WEOF to indi-
     cate an error.  In the event of an error, errno is set to indicate  the
     cause.

ERRORS

     Apart from the usual ones, there is
     EILSEQ Conversion of wc to the stream's encoding fails.

ATTRIBUTES

     For   an   explanation   of   the  terms  used  in  this  section,  see
     attributes(7).
     allbox; lbw17 lb lb l  l  l.   Interface Attribute Value  T{  fputwc(),
     putwc() T}   Thread safety  MT-Safe

CONFORMING TO

     POSIX.1-2001, POSIX.1-2008, C99.

NOTES

     The  behavior  of fputwc() depends on the LC_CTYPE category of the cur-
     rent locale.
     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.

SEE ALSO

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

COLOPHON

     This page is part of release 4.16 of the Linux  man-pages  project.   A
     description  of  the project, information about reporting bugs, and the
     latest    version    of    this    page,    can     be     found     at
     https://www.kernel.org/doc/man-pages/.

GNU 2017-09-15 FPUTWC(3)

/data/webs/external/dokuwiki/data/pages/man/putwc.txt · Last modified: 2019/05/17 09:32 by 127.0.0.1

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