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getwchar()

Read a character from a stream

Synopsis:

#include <wchar.h> 

wint_t getwchar( void );

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The getwchar() function reads the next wide character from stdin.

Returns:

The next character from stdin, cast as (wint_t)(wchar_t), or WEOF if the end-of-file has been reached or if an error occurs (errno is set).


Note: Use feof() or ferror() to distinguish an end-of-file condition from an error.

Errors:

EAGAIN
The O_NONBLOCK flag is set for stdin and would have been blocked by this operation.
EINTR
A signal terminated the read operation; no data was transferred.
EIO
Either a physical I/O error has occurred, or the process is in the background and is being ignored or blocked.
EOVERFLOW
Cannot read at or beyond the offset maximum for this stream.

Classification:

ANSI, POSIX 1003.1

Safety:
Cancellation point Yes
Interrupt handler No
Signal handler No
Thread Yes

See also:

errno, feof(), ferror(), fgetwc(), fgetws(), getc(), getwc(), putwc(), putwchar()


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