Exercise $2$:

a$)$ In a header file, create a class called Employee that includes two pieces of information as private data members $-$ a first name $($type string$)$ and a monthly salary $($type int$).$

b$)$ Your class should have a constructor that initializes the two data members.

c$)$ Provide a set and a get function for each data member. If the parameter of the set function for monthly salary is not positive, then monthly salary should be set to $0.$

d$)$ In a separate file, write a test program $($containing main method$)$ that demonstrates class Employee's capabilities.

i$.$ Create two Employee objects with different names and salaries.

ii$.$ Raise the salary of each Employee $($object$)$ by $10$ percent. Then display each Employee's $($objects$)$ new yearly salary.