redhat man page for atexit

ATEXIT(3)						     Linux Programmer's Manual							 ATEXIT(3)

NAME
       atexit - register a function to be called at normal program termination.

SYNOPSIS
       #include <stdlib.h>

       int atexit(void (*function)(void));

DESCRIPTION
       The  atexit()  function registers the given function to be called at normal program termination, whether via exit(3) or via return from the
       program's main.	Functions so registered are called in the reverse order of their registration; no arguments are passed.

RETURN VALUE
       The atexit() function returns the value 0 if successful; otherwise it returns a nonzero value; errno is not set.

CONFORMING TO
       SVID 3, BSD 4.3, ISO 9899

SEE ALSO
       exit(3), on_exit(3)

GNU
								    1997-09-14								 ATEXIT(3)