Money program

**Ganon11** · Feb 5 '08, 03:18 AM

Do you need to use a floating point (decimal) number to hold the money? I see you immediately convert it to an integer - maybe you should just start with an integer.

**hollywood115** · Feb 5 '08, 04:43 AM

You're problems is that you're not using Math.round.

just replace:
int money = (int)(TOTAL_AMO UNT * 100);
with:
int money = (int)Math.round (TOTAL_AMOUNT * 100);

it should round a lot more accurately now, try it out.

hope it helps :)

Originally posted by KoreyAusTex

I am having a very hard time making this program work right, I am sort of lost and I was wondering if I might get some advice.

This is what I have so far but I have a rounding error when I use the amount 10.03:

[CODE=java]public class Money
{
public static void main(String[] args)
{
double TOTAL_AMOUNT = 10.03;

int money = (int)(TOTAL_AMO UNT * 100);

System.out.prin tln("Your money amount " + TOTAL_AMOUNT + " consists of");

System.out.prin tln("\t" + (money / 100) + " dollars");

money = money % 100;

System.out.prin tln("\t" + (money / 25) + " quarters");
money = money % 25;

System.out.prin tln("\t" + (money / 10) + " dimes");
money = money % 10;

System.out.prin tln("\t" + (money / 5) + " nickels");
money = money % 5;

System.out.prin tln("\t" + (money / 1) + " pennies");
}
}[/CODE]

I know Math.round() is a useful class but can't figure how to put it in my program

**BigDaddyLH** · Feb 5 '08, 05:33 AM

Loose the doubles and use ints -- cents.

**KoreyAusTex** · Feb 9 '08, 07:07 AM

Originally posted by BigDaddyLH

Loose the doubles and use ints -- cents.

My professor wanted it in the format of 10.03 or 15.34. She didn't let us break it up, if I understand you correctly?

**BigDaddyLH** · Feb 9 '08, 06:58 PM

Originally posted by KoreyAusTex

My professor wanted it in the format of 10.03 or 15.34. She didn't let us break it up, if I understand you correctly?

Well, I'm not sure to say since I don't know the whole story, but if I were writing the program for my own benefit, I would work with ints, and merely format the output to look "15.34".

If you have time, ask your professor to clarify things for you.

**missdaisy14** · Jul 9 '13, 12:23 PM

This is very helpful. But what if the output is 0 and you don't want it to show in the results?

**Nepomuk** · Jul 9 '13, 03:12 PM

You can always catch specific cases with an if branch. When working with integers, you'd simply put something like this:

Code:

if(money / 25 > 0) {
    System.out.println("\t" + (money / 25) + " quarters");
}

You could even use an if-else structure to give a more natural response:

Code:

if(money / 25 > 0) {
    System.out.println("\t" + (money / 25) + " quarters");
} else {
    System.out.println("\tNo quarters");
}

There are shorter ways of doing this, but this is the easiest to understand.

Money program

Money program

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