Exam 2
                                      CS 141
                               Thursday, October 29, 1998



This is a closed-book, closed-notes examination.  There are four
problems.  Do not spend too much time on any problem. Read them 
all through first and solve them in the order that allows you to 
make the most progress.  

For all of the problems you need to write a program.
You do not need to write comments, include statements,
or meaningful variable names.  Assume that the type bool
exists.  You don't need any error checking.  When you ask 
the user for information, just write something short.  
Your program doesn't have to be fancy or user-friendly.  
You should make it as simple as possible, as long as it does 
what is required.  


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Problem 1 

A.  Write a function called big3 with three integers as
input parameters.  The function should return the largest 
of those three numbers.

B.  Using the function from part A, write a program that
reads in three integers then prints out the largest.
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Problem 2 

A.  Write a function called movemax with three integer
parameters.  The function should make the third integer
be the maximum of the first two.  

B.  Using the function from part A, write a program that
reads in two integers then prints out the largest.
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Problem 3 

Suppose I have written a function called prime, which takes
an integer as argument and returns true if that integer is
prime, false otherwise.  Suppose I have also written a function
called perfect which takes an integer as argument and returns
true if that integer is perfect, false otherwise.  (It is 
not necessary for you to know the definition of a perfect
number).  

Using my functions, write a function called pp which returns true 
if there exists an integer between 1 and 1000 which is both
perfect and prime.  (When I say between 1 and 1000, I mean 
including 1 and 1000).
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