1. A class called book has been designed to represent books at a library. It contains:

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C++

OOP

1. A class called Book has been designed to represent books at a library. It contains:

Three private instance variables: title (of the type string), author (of the type string) and publish_year(of type integer).

Two overloaded constructors - a default constructor with no argument, and a constructor which takes three values, two strings and an integer for the data of the book.
Two public methods: getYear() and getTitle(), which return the publish_year and the title, respectively.
Do the following, you do not have to define the above class.
a. Declare two objects of Book and enter their respective data.
b. Calculate the age of the first book based on the published year.
c. Determine if the second book is published before the year 2015.


2. Employee
{ private:
int ID;
double salary;
public:
Employee (int id, double s)
{ ID = id; salary=s; }
double get_salary () { return salary;}
int get_ID() { return ID;}
};
Given the above class definition, write the main () function that will do the following :
a. Declare 2 Employee objects and insert their data based on the user input
b. Determine who has a larger salary between the 2 objects

What I have tried:

i need answer above 2 question,
i want answer oop at c++ please