Suppose we are writing a c++ program for the sales department of a small company. the department has 4 sales person and is selling 5 products. the program will allow the input of each sale made (sales person, product, sales amount). the program will also allow a user to see the sales made by a particular sales person or the sales on a particular product. requirement of the program: 1. using a 2-d array as a data structure for storing the sales information2. containing a menu that allows a user to1. enter a sale2. check the sales made by a sales person3. check the sales on a product4. exit the program