Can you find BUG in these code

Question

https://code.sololearn.com/c0q6bppuJizI/?ref=app

Answer 1

put_Vehicle_datails(); is declared as protected member in class vehicle. So you can access it in Vehicle class and imported Car class. But not anywhere outside.

So from main() , you can't access.
a2. put_Vehicle_datails(); is error.
try to access it from Car class...