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fclose
Langue: en
Version: 1993-11-29 (ubuntu - 08/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
fclose - close a streamSYNOPSIS
#include <stdio.h>int fclose(FILE *fp);
DESCRIPTION
The fclose() function will flush the stream pointed to by fp (writing any buffered output data using fflush(3)) and close the underlying file descriptor.The behaviour of fclose() is undefined if the stream parameter is an illegal pointer, or is a descriptor already passed to a previous invocation of fclose().
RETURN VALUE
Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error. In either case any further access (including another call to fclose()) to the stream results in undefined behavior.ERRORS
- EBADF
- The file descriptor underlying fp is not valid.
The fclose() function may also fail and set errno for any of the errors specified for the routines close(2), write(2) or fflush(3).
CONFORMING TO
C89, C99.NOTES
Note that fclose() only flushes the user space buffers provided by the C library. To ensure that the data is physically stored on disk the kernel buffers must be flushed too, for example, with sync(2) or fsync(2).SEE ALSO
close(2), fcloseall(3), fflush(3), fopen(3), setbuf(3)COLOPHON
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