thank you Morem You say less secure than C.
Do you mean to imply that there may be buggers, if that's it it doesn't matter in itself it's perfectible ... For the moment Nim has helped me by noting and pointing out small errors not functional but easy to generate in C / C++ oh no matter in itself but that I could easily forget, but which when you look carefully should not be produce when writing code. As for the functional it seems more obvious to me but this is only my opinion after 7 months of daily practice.
