   Exercise: Debug the following C function which computes 
	     Q(x) for any  integer parameter x, where x>0 .

   Step 1:	Edit the Makefile to recompile the C program using the 
		-g compile option, if you haven't already done so.
   Step 2:	Invoke the debugger by typing:

			 $gdb bug2 core

		on the command line.
		Note that the "core" file is specified as an argument to
		gdb so that you DON'T have to rerun your program from within
		the debugger.
   Step 3:	Find at which line the error occurs using the debugger.
   Step 4:	Trace through the recursive calls when function Q is called 
		with input parameter x= 1, 100, 5.  Examine the value of x
		each time function Q is called.
   Step 5:	Do NOT edit your program, treat this as an exercise to trace
		program execution.  
   Step 6:	Remove any unwanted files by typing:

			make clean

		This may involve editing your makefile.  Take a look at 
		the Makefile in q1, if you are unsure of what to do.
