Question

Modify your Online Book Order program from week 5 to prompt the users for the number of books they are purchasing. Using a for loop, prompt the user for the cost of each book and store it into a subtotal. Use the subtotal and the number of books to pass to your method. No changes should be needed to your method or parameters. Output a receipt formatted as the following: Enter the number of books purchased: 4 Enter the book price for Book 1: 12.34 Enter the book price for Book 2: 23.33 Enter the book price for Book 3: 11.00 Enter the book price for Book 4: 13.55 Number of books purchased: 4 Book Subtotal: $60.22 ------------------------ Order Total: $69.53

This is what I had originally. Not sure if I did it right during that week. (numbers are interchangeable, I just used these first time round)

public class BookOrderKirkpatrick {
   public static void main(String[] args) {
       int numBooksPurchased = 5;
       double bookPrice = 10.00;
   double taxPercent = 0.055;
   double shippingCostPerBook = 1.50;
   double taxTotal = (taxPercent * bookPrice);
       double totalBookPrice = (bookPrice + taxTotal);
       double shippingTotal = (numBooksPurchased * shippingCostPerBook);
       double orderTotal = (numBooksPurchased * totalBookPrice + shippingTotal);
      
      
       System.out.println (orderTotal);
      

Answer 1

Dear Student ,

As per requirement submitted above kindly find below solution.

BookOrderKirkpatrick.java :

//import package
import java.util.*;

//java class
public class BookOrderKirkpatrick {
   // entry point of the program , main() method
   public static void main(String[] args) {
       // creating object of Scanner class
       Scanner sc = new Scanner(System.in);
       // asking user number of books they are purchasing
       System.out.print("Enter the number of books purchased:");
       // reading books
       int numBooksPurchased = sc.nextInt();
       // declaring variable to store Subtotal
       double Subtotal = 0;
       // using for loop
       for (int i = 0; i < numBooksPurchased; i++) {
           // asking user cost of each book
           System.out.print("Enter the book price for Book " + (i + 1) + " : ");
           // reading book cost and storing in the Subtotal
           Subtotal += sc.nextDouble();
       }
       // print number of book purchased
       System.out.println("Number of books purchased:" + numBooksPurchased);
       System.out.println("Book Subtotal: $"+Subtotal);// print book total
       double taxPercent = 0.055;
       double shippingCostPerBook = 1.50;
       double taxTotal = (taxPercent * Subtotal);
       double totalBookPrice = (Subtotal + taxTotal);
       double shippingTotal = (numBooksPurchased * shippingCostPerBook);
       double orderTotal = (totalBookPrice + shippingTotal);
       System.out.println("Order Total: $"+orderTotal);// print book order total
   }
}

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Output :Compile and run BookOrderKirkpatrick.java to get the screen as shown below

Screen 1:BookOrderKirkpatrick.java

NOTE :PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.