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Answer to Question #16550 in Java | JSP | JSF for Nancy

Question #16550
An online retailer sells five products whose retail prices are as follows:

Product 1, $2.98
Product 2, $4.50
Product 3, $3.98
Product 4, $4.49
Product 5, $6.87

Write an application that reads (from the keyboard) a series of pairs of numbers as follows:
product number
quantity sold
Run your program from a simple menu with the following options
Enter products sold
Display total retail value
Exit
Your program should
allow for entry of multiple products without returning to the main menu (use a sentinel-controlled loop)
use a switch statement to determine the retail price for each product
calculate and display the total retail value of all products sold
Expert's answer
import java.util.Scanner;

public class Store {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int choice;

double product1 = 0, product2 = 0, product3 = 0, product4 = 0, product5 = 0, total = 0;

do {

System.out.println("Enter product # (0 to quit): ");

String tempChoice = in.nextLine();

choice = Integer.parseInt(tempChoice);

switch (choice) {

case 1:

System.out.println("Enter product quantity: ");

String tempQuantity = in.nextLine();

product1 += Integer.parseInt(tempQuantity) * 2.98;

total += product1;

break;

case 2:

System.out.println("Enter product quantity: ");

tempQuantity = in.nextLine();

product2 += Integer.parseInt(tempQuantity) * 4.50;

total += product2;

break;

case 3:

System.out.println("Enter product quantity: ");

tempQuantity = in.nextLine();

product3 += Integer.parseInt(tempQuantity) * 3.98;

total += product3;

break;

case 4:

System.out.println("Enter product quantity: ");

tempQuantity = in.nextLine();

product4 += Integer.parseInt(tempQuantity) * 4.49;

total += product4;

break;

case 5:

System.out.println("Enter product quantity: ");

tempQuantity = in.nextLine();

product5 += Integer.parseInt(tempQuantity) * 6.87;

total += product5;

break;

}

} while (choice != 0);




System.out.println("Sum of product 1 sold: $" + product1);

System.out.println("Sum of product 2 sold: $" + product2);

System.out.println("Sum of product 3 sold: $" + product3);

System.out.println("Sum of product 4 sold: $" + product4);

System.out.println("Sum of product 5 sold: $" + product5);

System.out.println("Total sold : $" + total);




}

}

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