ch04/cashregister/CashRegisterSimulator.java
 import java.util.Scanner;

 /**
 This program simulates a transaction in which a user pays for an item
 and receives change.
 */
 public class CashRegisterSimulator
 {
public static void main(String[] args)
 {
 Scanner in = new Scanner(System.in);

 CashRegister register = new CashRegister();

 System.out.print(Enter price: );
 double price = in.nextDouble();
 register.recordPurchase(price);

 System.out.print(Enter dollars: );
 int dollars = in.nextInt();
 System.out.print(Enter quarters: );
 int quarters = in.nextInt();
 System.out.print(Enter dimes: );
 int dimes = in.nextInt();
System.out.print(Enter nickels: );
 int nickels = in.nextInt();
 System.out.print(Enter pennies: );
 int pennies = in.nextInt();
 register.enterPayment(dollars, quarters, dimes, nickels, pennies);

 System.out.print(Your change: );
 System.out.println(register.giveChange());
 }
 }