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atexit
======

Syntax
------

     #include <stdlib.h>
     
     int atexit(void (*func)(void));

Description
-----------

This function places the specified function FUNC on a list of functions
to be called when `exit' is called.  These functions are called as if a
last-in-first-out queue is used, that is, the last function registered
with `atexit' will be the first function called by `exit'.

At least 32 functions can be registered this way.

Return Value
------------

Zero on success, non-zero on error.

Example
-------

     void exit_func()
     {
       remove("file.tmp");
     }
     
     ...
     atexit(exit_func);
     ...