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up vote -4 down vote favorite

Whenever I run this code:

package jmv;

public class euler3 {
    int x=0;
    public static void main(String[] args) {
        for (int x=0 ; x < 6008 ; x++){
            if(6008 % x == 0){
                System.out.println(x);
            }
        }

    }
}

I receive this error:

Exception in thread "main" java.lang.ArithmeticException: / by zero
    at euler2.euler2.main(euler2.java:7)

What does this mean and how do I fix it?

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4  
for (int x=1 ; x < 6008 ; x++){ –  Mirek Surma yesterday
1  
start your loop with x=1. Java doesn't allow you to divide by 0 zero because is undefined –  shazin yesterday
    
you get that error because you are dividing a number by Zero which result to undefined. Try to start your loop to int x = 1 –  Niang yesterday
    
To those of us who've been working in Java and related languages for a while that error message is completely obvious. I had not even noticed on a first reading that it used the symbol / rather than the word divide. To those down-voting, try to think back to when all this was new to you. –  djna 23 hours ago
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5 Answers

up vote 2 down vote

The error is exactly what it states - you can't divide by zero. In your case, when you do if(6008 % x == 0) you are taking the modulus of 6008 and 0 - that's undefined. Try x=1 instead of x=0

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up vote 2 down vote

You set 

int x=0

and then compute the modulus, that is the remainder when dividing by x

6008 % x

So effectively you are dividing by zero, which is impossible. Try starting with x = 1;

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up vote 1 down vote

Your code started x at 0. That means, your code will try to run 6008 % 0, which causes the division by zero error.

Change int x = 0 to int x = 1 to fix that.

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up vote 1 down vote

This is due to division by zero as the modulo operator (%) is essentially a divide.

Start from x=1 instead.

  public static void main(String[] args) {
        for (int x=1 ; x < 6008 ; x++){
            if(6008 % x == 0){
                System.out.println(x);
            }
        }

    }
share|improve this answer
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up vote 0 down vote

start x from 1 so that 6008 % 0 The first iteration of loop which is causing error can be avoided..

Note: If zero is must add/print it manually before loop starts.

public class euler3 {
     public static void main(String[] args) {
        for (int x=1 ; x < 6008 ; x++){
            if(6008 % x == 0){
                System.out.println(x);
            }
        }
     }
}
share|improve this answer
    
A tiny bit of text explaining that changing the loop so that it starts at 1 avoids division by zero would make this a better answer. –  Jason Aller 23 hours ago
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