Hi Joe

Thanks for posting in the Lucidchart Community! Unfortunately Lucidchart does not currently support any plugins for importing C++ code into the application. However we're always looking for ways to improve Lucidchart and your feedback is the best way for us to do that. Would you mind adding this idea to our Product Feedback section? These ideas are shared directly with our development team for their consideration and is used to help them prioritize which features to work toward adding to Lucidchart in the future.

Thanks in advance for your request! If you have any additional questions please let me know.