putwchar - write a wide character to standard output
wint_t putwchar(wchar_t wc);
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).
The putwchar() function returns wc if no error occurred, or
WEOF to indicate an error.
For an explanation of the terms used in this section, see attributes(7).
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of putwchar() depends on the LC_CTYPE category of the
It is reasonable to expect that putwchar() will actually
write the multibyte sequence corresponding to the wide character
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