Section 12.7. Exercises

12.7. Exercises

Exercise 12-1

Create a class Invoice , that has a string property vendor and a double property amount . Overload the addition operator so that if the vendor properties match, the amount properties of the two invoices are added together in a new invoice. If the vendor properties do not match, the new invoice is blank.

Exercise 12-2

Modify the Invoice class so that two invoices are considered equal if the vendor and amount properties match. Test your methods .