What are the common reasons for VS Code not finding 'iostream' on macOS, even after installing Xcode Command Line Tools?

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Grade: Education Subject: Support
What are the common reasons for VS Code not finding 'iostream' on macOS, even after installing Xcode Command Line Tools?
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Even with Xcode Command Line Tools installed, VS Code might not be aware of the compiler's location if the extension pack for C/C++ is not installed or configured correctly. Additionally, issues with VS Code's `tasks.json` or `c_cpp_properties.json` files can cause pathing problems.