Set up associations

[yin-ka]

In this pull request, I achieved the following objectives:

• Created classes and objects in Ruby.
• Employed encapsulation and inheritance concepts in Ruby.
• Executed a program through the command line.
• Demonstrated the use of composition.
• Established associations between various classes and objects.

[frank1738]

Hi @yin-ka ,

You've aced it! Let's cut to the chase and merge it
Congratulations! 🎉

Highlights

🌟 Great job! Your documentation is on point and super professional! 📝✨
👍 Your work on setting up the associations is spot on! Keep up the awesome work! 🚀👏

Optional suggestions

N/A

Every comment with the [OPTIONAL] prefix won't stop the approval of this PR. However, I strongly recommend you to take them into account as they can make your code better. Some of them were simply missed by the previous reviewer and addressing them will really improve your application.

Cheers and Happy coding!👏👏👏

Feel free to leave any questions or comments in the PR thread if something is not 100% clear.
Please, remember to tag me in your question so I can receive the notification.

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