C++ Creating Classes (Invoice Class): Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four data membersa part number (type string), a part description (type string), a quantity of the item being purchased (type int) and a price per item (type int). Your class should have a constructor that initializes the four data members. Provide a set and a get function for each data member. In addition, provide a member function named getInvoiceAmount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as an int value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0. Write a test program that demonstrates class Invoices capabilities. The following is a sample of what your output may look like:

Use classes, functions and objects to create an invoicing system.

Demonstrate your understanding of three things:

1) Classes and functions

2) Objects

3) Exceptions

• Please make sure to demonstrate your understanding of exceptions from within this program. You may implement the use of exceptions in your own way, but please be sure to implement the use of exceptions.
• a small summary of how you chose to implement exceptions within your lab solution.