2. (20 points ) a) Write a C C++program that creates a chain of 10 processes and prints out their process ids and relationshups. For example process 1 is the pareat of process 2, process 2 is the parent of process 3, process 3 is the paren of 4 and so on. Each child has to print out all her ancestors identified by the process ids. b) write a C/--program that creates a fan of 10 processes. That rs, process t is the parent of processes, i 4 5 6 and so on