Library Functions Manual
NAME fclose — close a stream
LIBRARY Standard C Library (libc, -lc)
SYNOPSIS #include <stdio.h>
() function dissociates the named stream
from its underlying file or set of functions. If the stream was being used for output, any buffered data is written first, using fflush(3)
RETURN VALUES Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error. In either case no further access to the stream is possible.
The argument stream is not an open stream.
The fclose() function may also fail and set errno for any of the errors specified for the routines close(2) or fflush(3).
STANDARDS The fclose() function conforms to ANSI X3.159-1989 (“ANSI C89”).