exit - perform normal program termination
Standard C Library (libc, -lc)
exit() terminates a process. The status values EXIT_SUCCESS and
EXIT_FAILURE can be used to indicate successful and unsuccessful termination,
Before termination it performs the following functions in the order
1. Call the functions registered with the atexit(3) function, in
the reverse order of their registration.
2. Flush all open output streams.
3. Close all open streams.
4. Unlink all files created with the tmpfile(3) function.
The exit() function never returns.
_exit(2), atexit(3), intro(3), tmpfile(3)
The exit() function conforms to ANSI X3.159-1989 (``ANSI C'').
BSD March 21, 2001 BSD
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