The atexit Function
ANSI 4.10.4.3 The status returned by the atexit function if the value of the argument is other than zero, EXIT_SUCCESS, or EXIT_FAILURE
The atexit function returns zero if successful, or a nonzero value if unsuccessful.
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ANSI 4.10.4.3 The status returned by the atexit function if the value of the argument is other than zero, EXIT_SUCCESS, or EXIT_FAILURE
The atexit function returns zero if successful, or a nonzero value if unsuccessful.