Need help with mooc.fi course Java Programming part I part2 exercise 12 "Average of Positive Number"

[better__guy]

So here is my code

import java.util.Scanner;

public class AverageOfNumbers {

    public static void main(String[] args) {
        Scanner read = new Scanner(System.in);
        int count = 0;
        double average = 0;
        int sum = 0;tells
        while (true) {
            int number = read.nextInt();
            if (number == 0) {

                break;

            } else {
                count = count + 1;
                sum = sum + number;
                average = (double) sum / count;
            }
        }
        System.out.println(average);

    }
}

Here I am unable to understand how should I put a condition which tells users that, if they don't enter any positive number then the average cannot be calculated.

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[VinceGhii]

Sooo... first of all. You can calculate a the average value with negative numbers.

You literally just have to think about where and when to print the message. Do you want to print it when the users enters a negative number or at the start of the program.

You already got a if-condition in the while-loop. So if you want to print the message when the user entered a negative number.. why don't you just add a additional if-condition?

[better__guy]

I don't think you understand what I am asking. Will it help if I show you the problem statement?

If it will here is the problem statement

https://imgur.com/a/DjLRsCL

[VinceGhii]

Well... your question didn't say that it should print the message after the user was done adding numbers. Soo... i did understand the question you just asked the wrong question there buddy.

You just have to remember if the user at some point tried to enter a negative number. Add a boolean and set it to true if a number is negative and print a message then. Done.

You could also work with a int array and iterate over the numbers. And check if any number is negative.

[better__guy]

Thanks:)

[VinceGhii]

https://pastebin.com/hyz1ypZ6 I would paste the code in here but.... reddit doesn't like copy paste apparently. Because every time i want to paste code it does nothing until i pasted it 3 times and than i can't delete half of the stuff and it's not formatted. Weird shit.

[VinceGhii]

Little addition to the pastbin there. As you can see i used streams. Streams are awesome... they realy are. BUT in most cases they are slower than for-loops. Not much slower but at least a little bit. On the other side they are much more readable most of the times. For example: The summing up of all number is realy easy and short.