[Easy Task] Add comments to existing code for better understanding #138

Description of the idea

Add clear, helpful comments to the code to improve readability for beginners. Focus on explaining logic, functions, loops, and conditionals.

✅ Tasks:

• Review the code

• Add meaningful comments (avoid obvious ones)

• Ensure code runs after changes

Add several screenshots or links related to the idea (if applicable)

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Add more details about the idea

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