HOMEWORK 4 FAQ (Thu Oct 4, 0955 HOURS)

ERRATA
------

Problem 1
---------

Problem 2
---------
Q2-1)	When I run npipe it just hangs and there is no output.  What do I do?
A2-1)	Did you supply it with input?  The comments in do_plumbing()
	suggest that each process reads from stdin and writes to stdout.
	So, you either have to give it input from the keyboard or run it
	like this:	npipe < xxx
	where xxx is a file that you created with some number of lines
	of text.

Q2-2)	I get a "floating point exception".  What's that about?
A2-2)	There are NO floating point operations in npipe.  Typically, that
	means that you either have a bad pointer that has destroyed something
	or you are passing a function a bad argument ... maybe an index
	out of range of an array or a bad pointer.  You will have to first
	locate the area in the code causing the problem and then either
	run a debugger or insert calls to "fprintf(stderr,...)" to
	display the values of the parameters that are suspect.

Problem 3
---------