All of this neatly brings us to our next rule of fork.
Fork rule #7: The parent process must wait (block) upon the termination (death) of every child, directly or indirectly.
The fact is that, just like the malloc-free, the fork-wait go together. There will be situations in real-world projects where it might look impossible for us to force the parent process to block on the wait after the fork; we shall address how these seemingly difficult situations can be easily addressed (that's why we refer to an indirect method as well; hint: it's to do with signaling, the topic of the next chapter).
