fclose - close a stream
int fclose(FILE *stream);
() function flushes the stream pointed to by stream
(writing any buffered output data using fflush
(3)) and closes the
underlying file descriptor.
Upon successful completion, 0 is returned. Otherwise, EOF
is returned and
is set to indicate the error. In either case, any further access
(including another call to fclose
()) to the stream results in undefined
- The file descriptor underlying stream is not valid.
() function may also fail and set errno
for any of the
errors specified for the routines close
For an explanation of the terms used in this section, see attributes
POSIX.1-2001, POSIX.1-2008, C89, C99.
Note that fclose
() flushes only 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