Final Foundation: Inheritance and Polymorphism with Exercise Tracking
Overview
The final principles of Programming with Classes are inheritance and polymorphism. For this assignment, you will write a program that demonstrates your knowledge of these principles.
Scenario
Assume that a local fitness center has hired you to write an app for their customers to track their exercise. They have facilities for the following:
- Running
- Stationary Bicycles
- Swimming in the lap pool
For each activity, they want to track the the date and the length of the activity in minutes. Then, for each activity, they would like to also track the following:
- Running: distance
- Cycling: speed
- Swimming: number of laps
For each activity, they do not want to store this information, but they would like to be able to get following information (by calculation if it is not stored directly):
- The distance
- The speed (miles per hour or kilometers per hour)
- The pace (minutes per mile or minutes per kilometer)
- A summary in the form of:
- 03 Nov 2022 Running (30 min)- Distance 3.0 miles, Speed 6.0 mph, Pace: 10.0 min per mile
- 03 Nov 2022 Running (30 min): Distance 4.8 km, Speed: 9.7 kph, Pace: 6.25 min per km
You may choose if your program uses miles or kilometers (you do not need to handle both). In either case the length of a lap in the lap pool is 50 meters.
Program Specification
Write a program that has a base Activity class and then has a derived class for each of the three activities. The base class should contain any attributes that are shared among all activities. Then, each derived class can define any additional attributes.
In addition, the base class should contain virtual methods for getting the distance, speed, pace. These methods should be overridden in the derived classes.
Finally, you should provide a GetSummary method to produce a string with all the summary information.
Remember that the summary method can make use of the other methods to produce its result. This method should be available for all classes, so it should be defined in the base class (you can override it in the derived classes if needed, but it may not need to be...).
Once you have the classes in place, write a program that creates at least one activity of each type. Put each of these activities in the same list. Then iterate through this list and call the GetSummary method on each item and display the results.
In addition, your program must:
- Use inheritance to avoid duplicating shared attributes and methods.
- Use method overriding for the calculation methods.
- Follow the principles of encapsulation, making sure each member variable is private.
Math Hints:
- Distance (km) =
swimming laps * 50 / 1000 - Distance (miles) =
swimming laps * 50 / 1000 * 0.62 - Speed (mph or kph) =
(distance / minutes) * 60 - Pace (min per mile or min per km)=
minutes / distance - Speed =
60 / pace - Pace =
60 / speed
User Interaction
The focus of the Foundation programs is to help you design and build the classes and work with the relationships among these classes. With that in mind, you do not need to create a menu system or a user interface. Instead, your Program.cs file should create the required objects, set their values, and display them as specified, without any user interaction.
Showing Creativity
Because the purpose of these Foundation programs is to help you practice the principles of the course in a very direct way, you are not expected to show creativity and exceed the core requirements the way you have in previous projects. You can earn 100% by completing the requirements as specified.
Develop the Program
In the course repository, find the Foundation3 project in the foundation folder and write your program there.
Submission Instructions
Because this project does not have any user interaction, for submission, you will include a screenshot of your program execution in your GitHub repository alongside the corresponding code. (For detailed instructions about capturing a screenshot, see the Foundation #1 program description.)
Once you have added your screenshot to your GitHub repository, return to Canvas to submit a link to your GitHub repo.