(Calculating Total Sales) A mail order house sells five different products whose retail prices are: product 1-$2.98. product 2-$4.50, product 3-$9.98, product 4-$4.49 and product 5- $6.87. Write a program 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. Your program should calculate and display the total retail value of all products sold. Use a sentinel-con- trolled loop to determine when the program should stop looping and display the final results.

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