CS 455 Assignments

Homeworks

Homework One

Implement the program described in Main and Savitch (MS) p. 27 Self-Test Exercise 6. Compile and run your program on either the Wintel (with the VC++ compiler) or the Unix (with g++ compiler) platform. Then test the program using the boundary values. Turn in your source code and a runtime session that shows your test results. Due in class Thursday, week 2.

Homework Two

Exercises 2.33, 2.35, and 2.36 in DD (page 136). Due in class Thursday, week 4.

Homework Three

Exercises 3.40, and 3.48 in DD (page 217). Due in class Thursday, week 6.

Homework Four

Due in class Thursday, week 8: Enhance the Direction3D class from the Geometry3D library to have knowledge of spherical coordinates. Create a constructor that takes in two angles, azimuth (angle about the Z axis) and elevation (angle above or below the horizontal in radians (assume that the X-Y plane is horizontal). These angles are analagous to longitude and lattitude in geography, except that azimuth should be computed in the range of plus or minus pi (not as 0 to 360 degrees). Write a test program and show the output with source code for the modified class and test program.

Homework Five

Due in class Thursday, week 11: Create accessor functions getAzimuth() and getElevation, and mutator functions setAzimuth() and setElevation() for the modified class of Homework Four. Write a test program and show the output with source code for the class and test program.

Homework Six

Due in class Thursday (week 14): Problem 4.11 on page 272 of Deitel and Deitel.

Programming Projects

Programming Project One

Due on paper in class session of week 5: specify, design, and implement a class for a card in a deck of swimmer cards for a heat in a swim meet event. Each card will store data for a swimmer's name (first, middle, last), swimmer's age, the event number, heat number, event description (e.g. 100m freestyle), and swimmer's best time for the event.

The class should contain methods for setting and retrieving card data items. Write a demonstration program that exercises these functions.

The project report should have separate sections for specification, design, source code, and test results.

Programming Project Two

Due on paper in class session of week eight:

Create a Swimmer class that has the following data:

First name.
Middle name.
Last name.
Age.
Gender.
Swim team name.

Create an Event class that has the following data:

Event number (positive integer).
Swimmer minimum age (integer).
Swimmer maximum age (integer).
Swimmer gender (boolean or integer).
Event distance (integer).
Event stroke (character array or string).

Then replace your swimmer-event card class with a new class called "Splash" to use a pointer to a Swimmer object and a pointer to an Event object. This way a swimmer can enter sereral events without data being duplicated. Test your design by writing a program to create a some swimmers who have entered some events in the swim meet.

At this point your swim meet model is nearly complete. It should have some swimmers who participate in the meet and some events the swimmers compete in. Your test program should exercise all the member functions of your classes. The project report should have separate sections for specification, design, source code, and test results.

Programming Project Three

Swim Meet Application

Due on paper in class session of week 11:

Create a swim meet class and work it into your model. I suggest having many events pointed to by the swim meet, and one swim meet pointed to by each event. Then provide a menu-driven user interface that provides the following user features:

Create a new swim meet and give it a location, number of lanes in the pool, date, and name.
Add events to the meet.
Add swimmers to the meet. Each swimmer may enter several events.
Seed the swimmers into heats by sorting on their best times and putting the faster swimmers in the center lanes of the pool.
Record event times for the swimmers after each event is swum.
Given a swimmer's first and last names, report the events the swimmer swam and his times for each.
Given an event, give the number of heats that were required to accommodate the swimmers who entered it.
For each heat of a given event, list the swimmers by lane number.

Test your application user interface to build a two swim meets with at least 20 swimmers in each. Make up plausible names, ages, times, etc. for the swimmers (a good swimmer can swim about as fast as a person can walk). The meets should contain the following events as a minimum:

Boys age 9 and 10: 50 meter freestyle.
Boys age 9 and 10: 100 meter freestyle.
Boys age 10 and 11: 50 meter freestyle.
Boys age 10 and 11: 100 meter freestyle.
Boys age 9 and 10: 50 meter backstroke.
Boys age 9 and 10: 100 meter backstroke.
Boys age 10 and 11: 50 meter backstroke.
Boys age 10 and 11: 100 meter backstroke.
Girls age 9 and 10: 50 meter freestyle.
Girls age 9 and 10: 100 meter freestyle.
Girls age 10 and 11: 50 meter freestyle.
Girls age 10 and 11: 100 meter freestyle.
Girls age 9 and 10: 50 meter backstroke.
Girls age 9 and 10: 100 meter backstroke.
Girls age 10 and 11: 50 meter backstroke.
Girls age 10 and 11: 100 meter backstroke.

Note: saving data to a file is not required for this project, but if you wish you may implement that feature. It could make testing the user interface easier. See DD chapter 14 for file I/O if you are interested. In lieu of saving your meet to a file to avoid having to type all that data everytime you test it, you might create a function that has the appropriate data hard coded into it and run that function as an option from the user menu.

Programming Project Four

Archery Physics

Due on paper in class session of week 14:

Consider the act of an archer firing an arrow from his bow. What are the relevant objects and their attributes? The bow has a pull weight (force of the bow string at a specific distance of pull) and maximum pull distance. The arrow has mass and length (that allows it to be pulled only so far in the bow). One computation that might come out of this model is arrow velocity when shot from a given bow.

Produce an object model that has classes for the bow, arrow, and flight of the arrow. Attributes of the flight class include speed, energy, direction, and momentum.

The maximum distance an arrow may be pulled is the length of the arrow minus eight inches (to allow for the arrowhead and unpulled bend in the bow). The energy (ft*lb) given to an arrow is the maximum pull force (lbf) times half the pull distance and is equal to one half the mass of the arrow (lbm) times the flight velocity (in ft/s) squared.

Arrow momentum is equal to arrow mass times arrow velocity (pound-feet per second, lbm*ft/s).

Masses (lbm) and forces (lbf) are both measured in pounds. Energy is measured in foot-pounds (ft*lbf). Velocity is measured in feet per second (ft/s). There are 12 inches in a foot. There are 16 ounces in a pound.

Write a program that instantiates the following objects:

A 20 pound (at 30 inches) bow with a maximum pull length of 36 inches.
A 30 pound (at 30 inches) bow with a maximum pull length of 34 inches.
A 40 pound (at 30 inches) bow with a maximum pull length of 32 inches.
A 28 inch arrow weighing 1 ounce.
A 30 inch arrow weighing 1.5 ounces.
A 32 inch arrow weighing 2.0 ounces.

Assume that the pull force of the bow is linear with pull distance and that the bow and string are massless. Each arrow is fired from each bow once. Create a table of arrow flights giving the arrow, bow, velocity, and momentum for each.

Your report should document your design decisions. What data structures or abstract data types are you using (arrays, lists, queues, etc.)? Why? Submit files for source code. Runtime output can be a separate file or included in the report.

Email: Richard dot J dot Wagner at gmail dot com