2. (Employee Class) Create a class called Employee that includes three pieces of information as private data members A first name (type string). A last name (type string). A monthly salary (type double). Your class should have a constructor that initializes the three data members. If the monthly salary is not positive, set it to 0. Write a test program that demonstrates class Employee's capabllities. Create two Employee objects and display each object's yearly salary. Then give each Employee a 10 percent raise and display each Employee's yearly salary again