Write a program that takes a single integer argument n from the command line and creates a binary tree of processes of depth n. When the tree is created, each process should display the phrase “I am process x” and then terminate. The nodes of the process tree should be numbered according to a breadth-first traversal. (example and diagram omitted)

Make sure that the original parent process does not terminate until all of its children have
died. This is so that you can terminate the parent and its children from your terminal with a
Control-C.

This program should call fork () twice to generate two child processes for each level. The child
code segment will need to print the message and then check to see if it is the last level to be
generated. If it is not, then it should repeat a pair of fork () processes of its own. The parent should
call wait () to wait on each of its children to terminate.