Just google "How to embed C++ functions in RCBasic?" and the AI overview will explain how to do it. I just did that search and the AI results are correct.
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I don't use AI for coding. I did a google search to see if I had written some documentation on this before and got those search results. RCBasic is open source and has been constantly updated since 2016. There is not a single line of AI code in any of my repos. For people who just discovered this project, it may look like I generated a bunch of code over night but I have been working on this for over a decade now.
Here is my github if you want to check: https://github.com/n00b87
BTW, I think you are being extremely rude for someone who was asking for help.