Create two classes. The first, named Sale, holds data for a sales transaction. Its private data members include the day of the month, amount of the sale, and the salesperson’s ID number. The second class, named Salesperson holds data for a salesperson, and its private data members include each salesperson’s ID number and last name. Each class includes a constructor to which you can pass the field values. Create a friend function named display () that is a friend of both classes and displays the date of sale, the amount, and the salesperson ID and name. Write a short main () demonstration program to test your classes and friend function.
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