bsd man page for fclose

FCLOSE(3S)																FCLOSE(3S)

NAME
       fclose, fflush - close or flush a stream

SYNOPSIS
       #include <stdio.h>

       fclose(stream)
       FILE *stream;

       fflush(stream)
       FILE *stream;

DESCRIPTION
       Fclose  causes  any  buffers for the named stream to be emptied, and the file to be closed.  Buffers allocated by the standard input/output
       system are freed.

       Fclose is performed automatically upon calling exit(3).

       Fflush causes any buffered data for the named output stream to be written to that file.	The stream remains open.

SEE ALSO
       close(2), fopen(3S), setbuf(3S)

DIAGNOSTICS
       These routines return EOF if stream is not associated with an output file, or if buffered data cannot be transferred to that file.

7th Edition							   May 15, 1985 							FCLOSE(3S)