Jan 8, 97
Correction:
The following line in main has been changed
    Day d1, d2(3), d3('F', '1');
to
    Day d1, d2(3), d3('F', 'r');


CSE 9B  UCSD Winter, 1997
Assignment 1
Due date: 
For turnin program:
Midnight at the end of the day Tuesday January 14.
For interview:
End of the day Tuesday January 21.

Reading: Chapter 6 and section 8.1 of Chapter 8 in the Savitch text 

Programming: 
This is a review of what we covered about classes in CSE 9A.
You may work in teams of two people
on this.  You may work alone if you prefer.

In this assignment, you will write definitions for a number of
different classes. Read the instructions carefully. In one case
you only need to give the class definition, but need not define
the member functions. In other cases you must define all member
functions.  Here are some general details before we give you the
specific details:

>The file you turn in will contain all your class definition
before main and all the member functions that you are 
required to give placed after main, plus the following main:

int main()
{


    cout << "Counter Test:\n";
    CounterType c1, c2(100);

    c1.output(cout);
    cout << " should equal 0.\n";
    c2.output(cout);
    cout << " should equal 100.\n";

    c2.output(cout);
    cout << " should equal " << c2.get_count() << endl;

    c2.increment();
    c2.output(cout);
    cout << " should equal 101.\n";

    c1.decrement();
    c1.output(cout);
    cout << " should equal 0. (Better not be -1.)\n";
    c2.decrement();
    c2.output(cout);
    cout << " should equal 100.\n";

    for (CounterType c(1); c.get_count() <= 3; c.increment())
    {
        c.output(cout);
        cout << " ";
    }
    cout << "Hurrah!" << endl;

    cout << endl << "Day Test:\n";
    Day d1, d2(3), d3('F', 'i');
    d1.output(cout);
    cout << " = Sunday\n";
    d2.output(cout);
    cout << " = Wednesday\n";
    d3.output(cout);
    cout << " = Friday\n";

    d1 = d2.next();
    d1.output(cout);
    cout << " = Thursday\n";


    return 0;
}


Note that this main does not do anything
except test the two classes CounterType and 
Day.

>Do the classes one at a time. be sure one is correct and
compiles without any errors before you go on to do
the next class. This may require that you comment
out part of main for a while. Note that you will get
partial credit for each of the classes that are
completed, but very little if any partial credit for a single
class that is only partially completed.

>Be sure to include pre- and postconditions with your member functions.

Here are the classes you need to define. You need not give member functions
unless you are explicitly asked to give them:


CounterType
Programming Project 4 of Chapter 6 on page 341 of the Savitch text.
Except that we provide you with the names of the class members and
the test program. You must define the class and MUST DEFINE
ALL MEMBER FUNCTIONS for the class CounterType.

member function names:
    increment  -- increments the counter
    decrement  -- decrements the counter
    get_count  -- returns the current value of the counter
    output  -- outputs the current value of the counter
Note that this is essentially the same as Assignment 6
from CSE 9A.

Month
This is describe in Programming Project 5 of Chapter 6
of the Savitch text (pages 341-342). Note you do NOT
have to give any member function definitions for
the class Month. Also, you do NOT have to give any
test program for the class Month. 

Day
This is a class for a day of the week, such as
Sunday, Monday, etc. For this definition
think of the days as numbered Sunday is 0,
Monday is 1, Tuesday is 3, ..., Saturday is 6.
The class Day has the following member functions:

A constructor with no arguments that initializes the day 
to Sunday.

A constructor that takes one arguments which is
assumed to be one of the integers 0 through
6 and which sets the day according to the integer.

A constructor that takes two a parameters of
type char that are assumed to be the first two
letters in the name of some day. The constructor
initializes the day according to the arguments.
The constructor should work whether the arguments
are in uppercase or lowercase letters.

A function called next that returns the next day in
the week. (Remember that every day has a 
next day.)

A function called output that outputs the day
to a stream. The day is output as a work such
as "Monday"

You must define ALL MEMBER FUNCTIONS for the class Day.
It is fine to have long switch statements
or long multibranch if-else statements.