3.20 atexit

Function

Register an exit function.

Header

stdlib.h

Declaration

int __fastcall__ atexit (void (*exitfunc) (void));

Description

atexit registers the function pointed to by exitfunc as an exit function. Exit functions are called when the program terminates, they are called in LIFO order (the last function registered is called first). atexit returns zero on success and a nonzero value on failure.

Limits

• A maximum of 5 exit functions can be registered.
• There is no way to unregister an exit function.
• The function is only available as fastcall function, so it may only be used in presence of a prototype.

Availability

ISO 9899

See also

abort, exit

Example

None.