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NAME
putwchar - write a wide character to standard output
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <wchar.h>
wint_t putwchar(wchar_t wc);
DESCRIPTION
The putwchar() function is the wide-character equivalent of the putchar(3) function. It writes the wide
character wc to stdout. If ferror(stdout) becomes true, it returns WEOF. If a wide character conversion
error occurs, it sets errno to EILSEQ and returns WEOF. Otherwise, it returns wc.
For a nonlocking counterpart, see unlocked_stdio(3).
RETURN VALUE
The putwchar() function returns wc if no error occurred, or WEOF to indicate an error.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
│ putwchar() │ Thread safety │ MT-Safe │
└─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
C11, POSIX.1-2008.
HISTORY
POSIX.1-2001, C99.
NOTES
The behavior of putwchar() depends on the LC_CTYPE category of the current locale.
It is reasonable to expect that putwchar() will actually write the multibyte sequence corresponding to
the wide character wc.
SEE ALSO
fputwc(3), unlocked_stdio(3)
Linux man-pages 6.15 2025-05-17 putwchar(3)