please, answer these questions with explanation.

thank you in advance.

Writing and using a user-defined class: a) Write your own code for a user-defined class named Automobile to be saved in a self- contained file, Automobile.h. The class should have member variables price (a double) and model (a string). Your class should have a default constructor as well as a regular constructor that initializes the price and model. Write an accessor and mutator function for each variable as well. Finally, overload the