class Vehicule
int fuel
void Vehicule()
fuel = 100
return
/class
class Voiture is Vehicule
int passagers
void Voiture()
passagers = 3
fuel = 50
return
/class
class Buggy is Voiture
void Buggy()
passagers = 2
fuel = 50
return
/class
Buggy daisy
print daisy.passagers