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exit
Terminates the calling process normally.
Syntax
#include <stdlib.h>
void exit (int status);
Parameters
status A value passed to the environment upon program termination.
Return Values
None.
Description
The exit function terminates the calling process. The parameter status
is returned to the MPE/iX command interpreter using the CJCW job control
word. By convention, a status value of zero (0) indicates EXIT_SUCCESS,
and a value of one (1) indicates EXIT_FAILURE. You may establish
additional return values as required.
Using the return expression statement from main() in a C program has the
same effect as using exit(), where status is equivalent to expression.
This value returned using CJCW is undefined if main() does not return a
value or explicitly call exit().
The exit function causes all functions registered by the atexit function
to be called in the reverse order of their registration. The exit
function then triggers the system-level clean-up procedures. All output
streams are flushed. All stream are closed. All files created by the
tmpfile function are deleted.
See Also
abort(), atexit(), ANSI C 4.10.4.3, POSIX.1 8.1