need a help with looping

Just make sure you have enough speed. It gets scary when you're upside down, but resist the urge to break.

If you want more specific help, you'll have to tell us the vehicle you'll be doing loopings with.

I mean no offense, but in addition to help with your looping, you'll also need help with your question-formatting skills. Sorry. :/

-Albatross

Are you asking how to use loops? Go to this page: http://www.cplusplus.com/doc/tutorial/control/ and scroll down to where it says Iteration structures (loops). I think that should help. If there's anything you don't understand about them, don't hesitate to ask!