An online retailer sells five products whose retail prices are as follows: Product 1, $2.98; product 2, $4.50; product 3, $9.98; product 4, $4.49 and product 5, $6.87. Write an application in C++ that reads a series of pairs of numbers as follows:

a) product number b) quantity sold

Your program should use a switch statement to determine the retail price for each product. It should calculate and display the total retail value of all products sold. Use the sentinel-controlled loop to determine when the program should stop looping and display the final results.