Can the order of execution of fork() be determined?

Question

I\'m working on an exercise on the textbook \"Operating System Concepts 7th Edition\", and I\'m a bit confused about how does fork() work. From my understanding

Answer 1

We don't know which runs first, the parent or the child. This is why the parent generally has to wait for the child process to complete if there is some dependency on order of execution between them.

In your specific problem, there isn't any particular reason to use fork(). Your professor probably gave you this just for a trivial example.

If you want the parent to handle input and the child to calculate, all you have to do is move the call to fork() below the point at which you handle the command-line args. Using the same basic logic as above, have the child call display_fibonacci_sequence, and have the parent simply wait