Thread: Trying to Give Coins For Change

I am working on a program where you have to give change in coins. The program already gives the change amount, I'm just trying to figure out how to give the change in coins. This is what i have so far:

 
/**
   A cash register totals up sales and computes change due.
*/
package classes;
public class CashRegister
{
   // add two attributes (variables) purchase and payment
private double purchase;
private double payment;
 
 
   /**
      Constructor that constructs a cash register with no money in it.
   */
   public CashRegister()
   {
 
       //initialize the purchase and payment to 0.0
      double purchase = 0.0;
     double payment = 0.0;
 
   }
 
   /**
      Records the sale of an item.
      @param amount the price of the item
   */
   public void recordPurchase(double amount)
   {
 
       //add the amount of purchase to purchase
       purchase = purchase + amount;
 
   }
 
   /**
      Enters the payment received from the customer; should be called once
      for each coin type.
      @param coinCount the number of coins
      @param coinType the type of the coins in the payment
   */
 
 
 
 
 
   public void enterPayment(int coinCount, Coin coinType)
   {
 
 
      //calculate the payment
       payment = payment+ coinCount * coinType.getValue();
 
   }
 
   /**
      Computes the change due and resets the machine for the next customer.
      @return the change due to the customer
   */
   public double giveChange()
   {
     double change = purchase - payment;
 purchase = 0;
 payment = 0;
 return change;
 
 
 //calculate change,change is the difference between payment and purchase, return change
 
   }    
 
   public double giveCoins()
    {
       double change = purchase - payment;
 purchase = 0;
 payment = 0;
double dollars;
double quarters;
double nickels;
double dimes;
double pennies;
 if(change>=1)
    {dollars=change/1;}
 
 change=change-dollars;
 
 if(change>=.25)
     {quarters=change/.25;}
 
 change=change-(quarters*.25);
 
 if(change>=.1)
 {dimes=change/.10; }
  change=change-(dimes*.10);
 
  if(change>=.05)
 {nickels=change/.05; }
  change=change-(nickels*.05);
 
    if(change>=.01)
 {pennies=change/.01; }
  change=change-(pennies*.01);
 
  return dollars + quarters + dimes + nickels + pennies;
    }
 
}

As you can see I'm trying to make it so say you have 5.55 in change due. The program will look at 5.50, it is greater than 1 so it will do 5.50/1 to get the dollar amount. Of course I need to find a way to round the 5.5 that will result to just 5. The program will then subtract 5 from 5.50 and continue to quaerters ad so forth.

Okay So I went back and had the doubles converted to ints. Lol, however, I had to convert them back to double so the equations would work. I'm error free however, when I call the method it gives me 0.0. I have the method return 5 values so I should at least be getting 0.0, 0.0, 0.0, 0.0, 0.0...
Any help is appreciated I'm not sure what the problem could be now.

 
   public double giveCoins()
    {
       double change = purchase - payment;
 purchase = 0;
 payment = 0;
double dollars=0;
double quarters=0;
double nickels=0;
double dimes=0;
double pennies=0;
 if(change>=1)
    {dollars=change/1;}
 
 
        int dollarsint = (int)dollars;
 
        double dollarsafter = (double)dollarsint;
 
 change=change-dollarsafter;
 
 if(change>=.25)
     {quarters=change/.25;}
 
 int quartersint = (int)quarters;
 
        double quartersafter = (double)quartersint;
 
 change=change-(quartersafter*.25);
 
 if(change>=.1)
 
 {dimes=change/.10; }
 
  int dimesint = (int)dimes;
 
        double dimesafter = (double)dimesint;
 
 
 change=change-(dimesafter*.10);
 
 
 
  if(change>=.05)
 {nickels=change/.05; }
 
   int nickelsint = (int)nickels;
 
        double nickelsafter = (double)nickelsint;
 
 
  change=change-(nickelsafter*.05);
 
    if(change>=.01)
 {pennies=change/.01; }
 
    int penniesint = (int)pennies;
 
        double penniesafter = (double)penniesint;
 
  change=change-(penniesafter*.01);
 
  return dollars + quarters + dimes + nickels + pennies;
    }

So I put the code in the givechange() method instead and it gave me the result of 25.
I found out this result is the total amount of coins to give back.
return dollarsint + quartersint + dimesint + nickelsint + penniesint;
How can I make it so the return statement separates the value instead of adding them together.
I was trying to get a System.out.println() to work on the return but I couldn't get it

Okay so I'm making progress...
I set the purchase at .25 and Pay with 1 penny, 1 dime, 8 quarters, and 1 nickel ($2.16)
So I should get back 1.91

Here is the Output
The Change Due is: 1.9099999999999997 Dollars: 1 Quarters: 3 Dimes: 1 Nickels: 1 Pennies: 0

Lol it is so close. There is something wrong with how the change is calculating any ideas?