netbsd man page for exit

EXIT(3) 						   BSD Library Functions Manual 						   EXIT(3)

NAME
     exit -- perform normal program termination

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     void
     exit(int status);

DESCRIPTION
     exit() terminates a process.  The status values EXIT_SUCCESS and EXIT_FAILURE can be used to indicate successful and unsuccessful termina-
     tion, respectively.

     Before termination it performs the following functions in the order listed:

	   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.

     Following this, exit() calls _exit(2).

RESTRICTIONS
     Standard C guarantees only that the values zero, EXIT_SUCCESS, and EXIT_FAILURE produce meaningful results.  POSIX extends this to guarantee
     that the least significant 8 bits of status are preserved and returned to the parent via wait(2).	Values outside the supported range 0-255
     are bitwise-truncated; therefore, negative values should not be used.

RETURN VALUES
     The exit() function never returns.

SEE ALSO
     _exit(2), atexit(3), intro(3), tmpfile(3)

STANDARDS
     The exit() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								  January 2, 2012							       BSD