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Write a wide character to a stdout
#include <wchar.h>
wint_t putwchar( wchar_t wc );
- wc
- The wide character that you want to write.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The putwchar() function writes the wide character wc, cast as (wint_t)(wchar_t), to the stdout stream. It's equivalent to:
fputwc( wc, stdout );
The wide character written, cast as (wint_t)(wchar_t) or WEOF if an error occurs (errno is set).
|
If wc exceeds the valid wide-character range, the value returned
is the wide character written, not wc. |
- EAGAIN
- The O_NONBLOCK flag is set for fp and would have been blocked by this operation.
- EBADF
- The file descriptor for fp isn't valid for writing.
- EFBIG
- The file exceeds the maximum file size, the process's file size limit, 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.
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
errno,
getwc(),
getwchar(),
putwc()
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