Fork Question

[Mosabama]

Why the output of this:



int main ()
{
pid_t child_pid;
printf ("the main program process ID is %d\n", (int) getpid ());
child_pid = fork ();
if (child_pid != 0) {
printf ("this is the parent process, with id %d\n", (int) getpid ());
sleep(10);
printf ("the child’s process ID is %d\n", (int) child_pid);

}
else
sleep(10);
printf ("this is the child process, with id %d\n", (int) getpid ()); // twice ?? with diff pid ?
return 0;
}



is this:



the main program process ID is 2733
this is the parent process, with id 2733
the child’s process ID is 2734
this is the child process, with id 2733
this is the child process, with id 2734

[Mosabama]

ops sorry I got it ... there is no {} is else. the last line gets executed by both parent and child.