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(3) 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 nonlocking counterpart, see unlocked_stdio(3).
The getwchar() function returns the next wide-character from standard input, or WEOF.
POSIX.1-2001, POSIX.1-2008, C99.
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