I think it's debateable which is clearer. Your while condition requires some mental parsing of the booleans whereas the original can be analysed one at a time.
I'd say I prefer the original.
I'd say I prefer the original.
This approach also works fine for c++ and c# code (probably also java too), which I like as it keeps my projects nice and consistent and I can jump between codebases and feel at home.
The only thing that I don't like about it is the if() statements not being contained in {}'ies. That always makes me nervous.
do {
...
} while (p);