How to convert c++ coding in GNU

Answer 1

Here is a link that may help you
https://en.m.wikipedia.org/wiki/GNU

Answer 2

Please use relevant tags only. You need to specify the language C++ in your tags in order to improve context clarity 👍
Also describe clearly what you mean by convert C++ coding in GNU. It is unclear what you meant right now.
If you want to call out your friend you can mention them in Description section, but not in tags.

Answer 3

If you stick to LINUX, it goes without saying that it is GNU