#include <unistd.h> void _exit(int status);
_exit ends the current process. status is the return
status for the process.
_exit closes open file descriptors and directory streams in the
calling process. If the parent of the calling process is suspended by
wait or waitpid, the low-order eight bits of
status
are available to the parent. Otherwise, the parent process
saves the value of status to return to the parent in the event
of wait or waitpid. A SIGCHLD
signal is sent to the
parent process.
_exit does not directly terminate child processes.
Child processes that continue after the
parent process ends receive a new parent process ID of 1.
_exit does not perform C run-time
library cleanup; standard I/O stream buffers are not flushed,
and atexit routines are not called.
_exit is always successful. It does not return a value.
_exit:
#include <unistd.h> #include <stdio.h> . . . fflush(NULL); _exit(0); . . .
exit