FFLUSH(3) Linux Programmer's Manual FFLUSH(3) NAME fflush - SYNOPSIS #include int fflush(FILE *stream); DESCRIPTION fflush stream stream NULL, fflush unlocked_stdio(3) RETURN VALUE 0 EOF errno ERRORS EBADF Stream fflush errno write(2) NOTES fflush() C sync(2) fsync(2). CONFORMING TO fflush() ANSI X3.159-1989 (``ANSI C'') SEE ALSO fsync(2), sync(2), write(2), fclose(3), fopen(3), setbuf(3), unlocked_stdio(3) man man https://github.com/man-pages-zh/manpages- zh BSD MANPAGE 1993-11-29 FFLUSH(3)