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).

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

See also:

errno, feof(), ferror(), putwc(), putwchar()

"Stream I/O functions" and "Wide-character functions" in the summary of functions chapter