Outputs one wide character to the standard output file (stdout).
[Format]
#include <wchar.h>
wint_t putwchar(wchar_t c);
[Parameters]
c Wide character to be output
[Return values]
Normal: Output wide character
Abnormal: WEOF
[Remarks]
When a write error occurs, the error indicator for that file is set.
The putwchar function is the wide-character version of the putchar function.