fclose - close a stream
#include <stdio.h> int fclose(FILE *stream);
Upon successful completion, 0 is returned. Otherwise, EOF is returned and
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.
The file descriptor underlying
stream is not valid.
For an explanation of the terms used in this section, see attributes(7).
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(2) or fsync(2).
This page is part of release 4.15 of the Linux
man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.