After a little review and test i found that this fails.

calling the generated greeting method multiple times would fail. This throws an segmentation fault error.

sorry for this wrong thread.

https://gist.github.com/addisaden/d89c7eaed520a2a8c3a1#file-...

OK, but nested functions are not allowed in standard C.

Thank you for your Feedback :) Would i get in trouble, when i use this in the future?

My experience is not so high on C.