Final Examination
                                          CS 141
                               Thursday, December 18, 1997



This is a closed-book, closed-notes examination.  There are six
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 most of the problems, you need to write a program or
a function.  You do not need to write comments or include 
statements.  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.
	
In each problem, once you have written a function in one
part of the problem, you may use the function in another
part of the problem.
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Problem 3 (35 points):  

A.  Write a class called person, with data fields fname, lname 
and year_born, whose values will be the first and last name of 
a person and the year that person was born.  Look at the other
parts of this question to see what else the class should contain.

B.  Write a member function called age, for person, which takes 
the current year as input parameter, and returns the age of the 
person at the end of the current year.

C.  Write a non-member function (which is not a friend) called 
sum_age that takes an array of persons, the number of persons in 
the array, and the current year as input parameters, and returns 
the sum of the ages of all the persons in the array.

D.  Write a member function called match, for person, which
takes a first name and a last name as input parameters, and returns 
true if the person has that first and last name, false if not.

E.  Write a non-member function called add_person (which is not 
a friend) that takes an array of persons, the number of persons 
in the array, and another person as input parameters.  The function 
should add the other person to the array if there is nobody in the
array with that first and last name, and modify the size accordingly.
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Problem 4 (20 points):  

This problem uses the class from problem 2, and may use 
any of the functions from problem 2.

A.  Write a class called company, giving it appropriate 
data fields to represent all the persons in that company
(Assume the company will never have more than 100 persons,
but might have less).  Look at the other parts of this 
question to see what else the class should contain.

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