the comitee of examiners don't know so well all this programming stuff
I hope that they don't surprise you. They may know far more than you think they do.
If you want to make your code easier for your examiners to read, consider sorting out the indentation and whitespace in your sketch.
The IDE has Auto-Format in the Tools tab....
Tollgate or tollbar. Tollbooth makes no sense.
Tollbooth is what the operator stands inside. I've seen them since 1961, back in the age when they took money and gave change. By 64-65 they had Exact Change Only lanes but even to the mid-80's I knew a girl who worked in a tollbooth.
Maybe what makes sense depends on where you're from and where you've been.