fputwc(3) — Linux manual page


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

NAME         top

       fputwc, putwc - write a wide character to a FILE stream

SYNOPSIS         top

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

       wint_t fputwc(wchar_t wc, FILE *stream);
       wint_t putwc(wchar_t wc, FILE *stream);

DESCRIPTION         top

       The fputwc() function is the wide-character equivalent of the
       fputc(3) 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 nonlocking counterparts, see unlocked_stdio(3).

RETURN VALUE         top

       On success, fputwc() function returns wc.  Otherwise, WEOF is
       returned, and errno is set to indicate the error.

ERRORS         top

       Apart from the usual ones, there is

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

ATTRIBUTES         top

       For an explanation of the terms used in this section, see

       │Interface                             Attribute     Value   │
       │fputwc(), putwc()                     │ Thread safety │ MT-Safe │

CONFORMING TO         top

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

NOTES         top

       The behavior of fputwc() depends on the LC_CTYPE 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

SEE ALSO         top

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

COLOPHON         top

       This page is part of release 5.13 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

GNU                            2021-03-22                      FPUTWC(3)

Pages that refer to this page: curs_add_wch(3x)fgetwc(3)fputws(3)puts(3)putwchar(3)wprintf(3)