An exercise in reading code
     -  Look at demo.C, we should know this code.
     
-  Look at readCode1.C
     
-  Look at readCode2.C
     
-  in each code,
     
           -  Before you run it, what does the code do?
	   
-  What output would you expect?
	   
-  What calculations happen?
	   
-  Is there anything strange in the code?  What does that do?
	   
-  Does the formatting make it easier/harder to read the code?
     
 
-  Compile and run the code.
      
         -  Did it do as you expected?
	 
-  If not, what happened and why?
     
 
-  If you needed to, could you extend this code?
     
-  Could you make basic changes to the code?