The structure of the C source code in here will take a little getting used to.
It works like this:

	examples:sample C source code illustrating one thing or another.
	drivers: contains source code that exercise the code you're writing
		 for your assignment.

	x:       a minimal x-windows library.  You do not need to change it.
	plot:    the initial source code from which you'll work, as well
		 as the object code for a solution to the last question of
		 Asst 1.
	spline:	 the initial spline source code.  Last question of Asst 2.


NOTE: To run an X application on CDF, you may have to point to your
local run-time X library.  On our teaching machine, for example, you
should type

	setenv LD_LIBRARY_PATH /local/lib/X11

in the window in which you are planning to execute the program.  The
easy way to do this is to put the above in your shell startup, such
as a .cshrc located in your home directory.