#Having trouble with this coding exercise

1 messages · Page 1 of 1 (latest)

radiant gulchBOT
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<@&987246399047479336> please have a look, thanks.

radiant gulchBOT
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hard knot
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your scanner should not be static

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you should not decalre multiple variables in a comma-separated list

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and the problem asks to read in the number of containers of each size, you only have a single variable for it

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recommended starter code: ```java
public class variableExercises5 {

public static final int CENTS_PER_SMALL_CONTAINER = 10;
public static final int CENTS_PER_LARGE_CONTAINER = 25;

public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    

}

}

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you should have static constants defined like I have to prevent having 'magic numbers' in your code that you don't know what they correlate to.

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Also note I used int and not double for money because double's are not precise. For this its probably fine but note that 0.1 + 0.2 != 0.3 due to repeating binary decimals

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hence you could end up being off by a cent or two if you dont use integers to store the base unit (cents)

hard knot
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just divide by 100 at the end to be lazy, or parse the string of the integer representation

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but dividing by 100 and then applying %0.2f in a string format will suffice

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or something similar to that

past raven
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import java.util.Scanner;

public class ContainerRefundCalculator {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter the number of containers (1 liter or less): ");
        int smallContainers = scanner.nextInt();

        System.out.print("Enter the number of containers (more than 1 liter): ");
        int largeContainers = scanner.nextInt();

        double smallContainerRefund = smallContainers * 0.10;
        double largeContainerRefund = largeContainers * 0.25;
        double totalRefund = smallContainerRefund + largeContainerRefund;

        System.out.printf("The total refund for returning the containers is: $%.2f%n", totalRefund);
    }
}
fervent atlas
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If a variable you need to output needs decimals, it will always be a double/float. If a variable you need to output does not need decimals, you will use int

fervent atlas
frail egret
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it's generally the correct way do so it

fervent atlas
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Really? A way to break a line is %n?

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I thought that was the intention

frail egret
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yes bc in platforms like windows, \n is the incorrect way of doing newline

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a newline in windows is \r\n

fervent atlas
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Seriously??

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Huh, the more you know

frail egret
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%n picks the correct one for the current platform

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by using System.lineSeparator()

fervent atlas
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Huh... I did not know that

radiant gulchBOT
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Closed the thread due to inactivity.

If your question was not resolved yet, feel free to just post a message to reopen it, or create a new thread. But try to improve the quality of your question to make it easier to help you 👍

radiant gulchBOT
#

Closed the thread due to inactivity.

If your question was not resolved yet, feel free to just post a message to reopen it, or create a new thread. But try to improve the quality of your question to make it easier to help you 👍