atexit(3C)

atexit -- add program termination routine

Synopsis

   include <stdlib.h>


   int atexit(void (func)(void));

Description

atexit adds the function func to a list of functions to be called without arguments on normal termination of the program. Normal termination occurs by either a call to the exit system call or a return from main. At least 32 functions may be registered by atexit; the functions will be called in the reverse order of their registration.

Return values

atexit returns 0 if the registration succeeds, nonzero if it fails.

Notices

If a signal is sent to a process that would have Exit or Core actions, the functions registered with atexit are not called. See signal(5).

References

exit(2)