Writes a wide character to the output stream.
#include <wchar.h>
wint_t putwc (
wchar_t wc,
struct _iobuf *fp);
(IN) Specifies the wide character to write.
(IN) Points to the file.
If successful, returns the wide character written. If a write error occurs, returns WEOF (-1), sets the error indicator for the stream, and sets errno to one of the following: