Part 3 And now for the fun part, the challenge. This challenge is asking you to
ID: 3755903 • Letter: P
Question
Part 3 And now for the fun part, the challenge. This challenge is asking you to write a program that will simulate a cash register. Ask for the price of an item, the payment amount from the customer, and then print out the change due to the customer but print it out as dollars, the number of quarters, the number of dimes, the number of nickels, and the number of pennies. Hint, this is a good opportunity to work with modules or remainder division. Also allow the user to enter multiple transactions. You have 1 hour and a half to complete this task, so take your time and have fun. After you write the program and test it try to write an explanation to tell us how did you solve your problem, using your own words.Explanation / Answer
Since you didn’t specify the language. Here is the completed code for this problem in Java. Comments are included, go through it, learn how things work and let me know if you have any doubts. If you need this in a different language, let me know. Also the logic stays the same for any other languages. If you are satisfied with the solution, please upvote the answer. Thanks
// CashRegister.java
import java.util.Scanner;
public class CashRegister {
/**
* method to display the change
* @param itemPrice - price of item
* @param payment payment in dollars
*/
static void displayChange(double itemPrice, double payment) {
if (payment < itemPrice) {
System.out.println("Payment cannot be smaller than item price!");
} else {
// finding the change
double change = (payment - itemPrice);
// converting to cents
change *= 100;
// extracting dollars
int dollars = (int) (change / 100);
// subtracting dollars
change -= dollars*100;
// finding the remaining, here Math.round() is used because of the
// weird precision troubles in Java that occur sometimes
int remaining = (int) Math.round(change);
//finding the quarters (25 cents)
int quarters = remaining / 25;
//subtracting the quarters
remaining = remaining % 25;
//finding the dimes (10 cents)
int dimes = remaining / 10;
//subtracting the dimes
remaining = remaining % 10;
//finding the nickels (5 cents)
int nickels = remaining / 5;
//finding the remaning as pennies
int pennies = remaining % 5;
//displaying change
System.out.printf("Here's your change: %d dollars, %d quarters,"
+ " %d dimes, %d nickels and %d pennies ", dollars,
quarters, dimes, nickels, pennies);
}
}
public static void main(String[] args) {
//scanner to read input
Scanner scanner = new Scanner(System.in);
//initializing variables
double itemPrice = 0, paymentAmount;
//looping until a negative value is entered
while (itemPrice >= 0) {
System.out.print("Enter the item price (or -1 to quit): ");
itemPrice = scanner.nextDouble();
if (itemPrice >= 0) {
//getting payment amount in dollars
System.out.print("Enter the payment amount: ");
paymentAmount = scanner.nextDouble();
//displaying the change
displayChange(itemPrice, paymentAmount);
}
}
}
}
/*OUTPUT*/
Enter the item price (or -1 to quit): 4.87
Enter the payment amount: 5
Here's your change: 0 dollars, 0 quarters, 1 dimes, 0 nickels and 3 pennies
Enter the item price (or -1 to quit): 3.22
Enter the payment amount: 4
Here's your change: 0 dollars, 3 quarters, 0 dimes, 0 nickels and 3 pennies
Enter the item price (or -1 to quit): 12
Enter the payment amount: 15
Here's your change: 3 dollars, 0 quarters, 0 dimes, 0 nickels and 0 pennies
Enter the item price (or -1 to quit): 12.50
Enter the payment amount: 15
Here's your change: 2 dollars, 2 quarters, 0 dimes, 0 nickels and 0 pennies
Enter the item price (or -1 to quit): -1