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Thread: Java program to display single and plural words

  1. #1
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    Default Java program to display single and plural words

    Hi all I am having some issues with an assignment I need some guidance with the red wording the rest I have been able to finish. Give me a hint or something....thanks

    Write a Java program that modifies Example 2.4, “Computing Changes.” Display the non-zero denominations only. Display singular words for single units like 1 dollar and 1 penny, and display plural words for more than one unit like 2 dollars and 3 pennies. (Use 23.67 to test your programs.) If the user enters zero or a negative amount, your program should exit properly and display a message stating that the amount entered by the user was zero or negative.

    If input is 0, your output should be:

    Your amount is zero

    If input is -2000.25, your output should be:

    Your amount is negative

    //I have coded the above and added it to this I just cannot figure out or wrap my head around the task
    //below if anyone could help me out in my mind it seems simple but for some reason I cant make it work


    If input is 23.67, your output should be:

    Your amount 23.67 consists of 23 dollars 2 quarters 1 dime 1 nickel 2 pennies


    Important Notes : The input and output must use JOptionPane dialog and display boxes.

     
    // ComputeChange.java: Break down an amount into smaller units
     
    import javax.swing.JOptionPane;
     
    public class ComputeChange {
     
    /** Main method */
     
    public static void main(String[] args) {
     
    double amount; // Amount entered from the keyboard
     
    // Receive the amount entered from the keyboard
     
    String amountString = JOptionPane.showInputDialog(null,
     
    "Enter an amount in double, for example 11.56",
     
    "Example 2.4 Input", JOptionPane.QUESTION_MESSAGE);
     
    // Convert string to double
     
    amount = Double.parseDouble(amountString);
     
    int remainingAmount = (int)(amount * 100);
     
    if(amount == 0){
    	String message1=
    		String.format("Your amount is zero.");
    		JOptionPane.showMessageDialog(null, message1);
    			System.exit(0);}
     
    if(amount < 0){
    	String message2=
    		String.format("Your amount is negative.");
    		JOptionPane.showMessageDialog(null, message2);
    			System.exit(0);}
     
    // Find the number of one dollars
     
    int numOfOneDollars = remainingAmount / 100;
     
    remainingAmount = remainingAmount % 100;
     
    // Find the number of quarters in the remaining amount
     
    int numOfQuarters = remainingAmount / 25;
     
    remainingAmount = remainingAmount % 25;
     
    // Find the number of dimes in the remaining amount
     
    int numOfDimes = remainingAmount / 10;
     
    remainingAmount = remainingAmount % 10;
     
    // Find the number of nickels in the remaining amount
     
    int numOfNickels = remainingAmount / 5;
     
    remainingAmount = remainingAmount % 5;
     
    // Find the number of pennies in the remaining amount
     
    int numOfPennies = remainingAmount;
     
    // Display results
     
    String output = "Your amount " + amount + " consists of \n" +
     
    numOfOneDollars + " dollars\n" +
     
    numOfQuarters + " quarters\n" +
     
    numOfDimes + " dimes\n" +
     
    numOfNickels + " nickel\n" +
     
    numOfPennies + " pennies";
     
    JOptionPane.showMessageDialog(null, output,
     
    "Example 2.4 Output", JOptionPane.INFORMATION_MESSAGE);
     
    System.exit(0);
     
    }
     
    }
    Last edited by Deep_4; November 8th, 2012 at 12:30 PM.


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Help with final piece of assignment Singular/Plural display

    I'm confused on what it is you want... I ran your program and it seems to give the correct output each time.

    edit:

    oh wait, i see what you want. The easiest way to do this is with if statements:
    // replace your String output = ... with this
    String output = "Your amount " + amount + " consists of \n";
            if (numOfOneDollars == 1)
            {
                output += numOfOneDollars + " dollar\n";
            }
            else if (numOfOneDollars > 1)
            {
                output += numOfOneDollars + " dollars\n";
            }
            if (numOfQuarters == 1)
            {
                output += numOfQuarters + " quarter\n";
            }
            else if (numOfQuarters > 1)
            {
                output += numOfQuarters + " quarters\n";
            }
            if (numOfDimes == 1)
            {
                output += numOfDimes + " dime\n";
            }
            else if (numOfDimes > 1)
            {
                output += numOfDimes + " dimes\n";
            }
            if (numOfNickels == 1)
            {
                output += numOfNickels + " nickel\n";
            }
            else if (numOfNickels > 1)
            {
                output += numOfNickels + " nickels\n";
            }
            if (numOfPennies == 1)
            {
                output += numOfPennies + " penny\n";
            }
            else if (numOfPennies > 1)
            {
                output += numOfPennies + " pennies\n";
            }
    Last edited by helloworld922; August 10th, 2009 at 11:19 PM.

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