putwchar
(3)write a wide character to standard output
#include <wchar.h> wint_t putwchar(wchar_t wc);
LIBRARY
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).