The getwchar function is the wide-character equivalent of the
getchar function. It reads a wide character from stdin and
returns it. If the end of stream is reached, or if ferror(stdin)
becomes true, it returns WEOF. If a wide character conversion error occurs, it
sets errno to EILSEQ and returns WEOF.
For a non-locking counterpart, see unlocked_stdio(3).
The behaviour of getwchar depends on the LC_CTYPE category of the current
It is reasonable to expect that getwchar will actually read a multibyte
sequence from standard input and then convert it to a wide character.