Related Issue

Added file hotel and prices in c++ in hackerrank folder 

Merge into main ...

Closes: #501

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Mention any unusual behaviour of your code (Write NA if not)

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• My code follows the guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly whereever it was hard to understand.
• My changes generate no new warnings.

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