Need help with this C++ homework on Inheritance.

header file, cpp file, and source file.

Make a class Vehicle with a member function to set the gas mileage, which is stored in a data member Add member function display to write on the screen the vehicle's gas mileage Make a class Car which inherits from vehicle Add a member function to car to set the maximum number of passengers, which is stored in a data member Add member function display to Car which writes the number of passengers on the screen and the gas mileage by using the base class display function Make a class Truck which inherits from vehicle Add a member function to Truck to set the maximum payload, which is stored in a data member Add member function display to Truck which writes the payload on the screen and the gas mileage by using the base class display function Use the following main function to obtain the given output # include # include "Vehicle.h" using namespace std: int main() { Car sedan: Truck bigRig: sedan.setMileage(25): sedan.setPassengers(5): sedan.display(): cout