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. 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).

RETURN VALUE The fputwc() function returns wc if no error occurred, or WEOF to indi- cate an error.

ERRORS Apart from the usual ones, there is

EILSEQ Conversion of wc to the streams encoding fails.

CONFORMING TO C99, POSIX.1-2001.

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 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

GNU 1999-07-25 FPUTWC(3)