fputwc()
QNX SDP8.0C Library ReferenceAPIDeveloper
Write a wide character to a stream
Synopsis:
#include <wchar.h>
wint_t fputwc( wchar_t wc,
FILE * fp );
Arguments:
- wc
- The wide character you want to write.
- fp
- The stream you want to write the character to.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The fputwc() function writes the wide character specified by wc, cast as (wint_t)(wchar_t), to the stream specified by fp.
Returns:
The wide character written, cast as (wint_t)(wchar_t), or WEOF if an error occurred (errno is set).
Note:
If wc exceeds the valid wide-character range, the value returned
is the wide character written, not wc.
Errors:
- EAGAIN
- The O_NONBLOCK flag is set for fp and would have been blocked by this operation.
- EBADF
- The stream specified by fp isn't valid for writing.
- EFBIG
- The file exceeds the maximum file size, or the function can't write at or beyond the offset maximum.
- EINTR
- A signal terminated the write operation; no data was transferred.
- EIO
- A physical I/O error has occurred or all of the following conditions were met:
- The process is in the background.
- TOSTOP is set.
- The process is blocking/ignoring SIGTTOU.
- The process group is orphaned.
- EPIPE
- Can't write to pipe or FIFO because it's closed; a SIGPIPE signal is also sent to the thread.
Classification:
| Safety: | |
|---|---|
| Cancellation point | Yes |
| Signal handler | No |
| Thread | Yes |
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