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getwchar - read a wide character from standard input
#include <wchar.h>
wint_t getwchar (void);
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.
The getwchar function returns
the next wide-character from standard input, or WEOF.
ISO/ANSI
C, UNIX98
fgetwc(3)
The behaviour of getwchar depends on the
LC_CTYPE category of the current locale.
It is reasonable to expect that
getwchar will actually read a multibyte sequence from standard input and
then convert it to a wide character.
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