Originální popis anglicky:
fputc - put a byte on a stream
Návod, kniha: POSIX Programmer's Manual
#include <stdio.h>
int fputc(int
c, FILE
*stream);
The
fputc() function shall write the byte specified by
c
(converted to an
unsigned char) to the output stream pointed to by
stream, at the position indicated by the associated file-position
indicator for the stream (if defined), and shall advance the indicator
appropriately. If the file cannot support positioning requests, or if the
stream was opened with append mode, the byte shall be appended to the output
stream.
The
st_ctime and
st_mtime fields of the file shall be marked for
update between the successful execution of
fputc() and the next
successful completion of a call to
fflush() or
fclose() on the
same stream or a call to
exit() or
abort().
Upon successful completion,
fputc() shall return the value it has
written. Otherwise, it shall return EOF, the error indicator for the stream
shall be set, and
errno shall be set to indicate the error.
The
fputc() function shall fail if either the
stream is unbuffered
or the
stream's buffer needs to be flushed, and:
- EAGAIN
- The O_NONBLOCK flag is set for the file descriptor
underlying stream and the process would be delayed in the write
operation.
- EBADF
- The file descriptor underlying stream is not a valid
file descriptor open for writing.
- EFBIG
- An attempt was made to write to a file that exceeds the
maximum file size.
- EFBIG
- An attempt was made to write to a file that exceeds the
process' file size limit.
- EFBIG
- The file is a regular file and an attempt was made to write
at or beyond the offset maximum.
- EINTR
- The write operation was terminated due to the receipt of a
signal, and no data was transferred.
- EIO
- A physical I/O error has occurred, or the process is a
member of a background process group attempting to write to its
controlling terminal, TOSTOP is set, the process is neither ignoring nor
blocking SIGTTOU, and the process group of the process is orphaned. This
error may also be returned under implementation-defined conditions.
- ENOSPC
- There was no free space remaining on the device containing
the file.
- EPIPE
- An attempt is made to write to a pipe or FIFO that is not
open for reading by any process. A SIGPIPE signal shall also be sent to
the thread.
The
fputc() function may fail if:
- ENOMEM
- Insufficient storage space is available.
- ENXIO
- A request was made of a nonexistent device, or the request
was outside the capabilities of the device.
The following sections are informative.
None.
None.
None.
None.
ferror() ,
fopen() ,
getrlimit() ,
putc() ,
puts() ,
setbuf() ,
ulimit() , the Base Definitions
volume of IEEE Std 1003.1-2001,
<stdio.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
