[Term Entry] C++ Variables Mutable Variables

[codecademy-docs]

Reason/inspiration (optional)

We would like a new entry on the Mutable Variables term under C++. The entry should go in a new file under docs/content/cpp/concepts/variables/terms/mutable-variables/mutable-variables.md.

The entry should include:

• An introduction to the concept
• A Syntax section that provides the syntax for the concept
• An Example section that provides an example demonstrating the concept in use
• A Codebyte Example section that provides a codebyte example demonstrating the concept in use

Please refer to the term entry template, content standards and markdown style guide when working on the PR for this issue.

Entry Type (select all that apply)

New Term for Existing Concept Entry

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[braanj]

Hey @codecademy-docs Could you please assign this issue to me?

[mamtawardhani]

Hey @braanj You’re assigned 🎉 In addition to the documents linked in the description, please also look at the Contribution Guide. After creating a PR, the maintainer(s) (with the collaborator label) will add comments/suggestions to address any revisions before approval.