为什么我在这个程序中收到“/ by zero”错误？

Question

/**
 * Write a description of class TicTacToe here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */

import java.util.Scanner;

public class TicTacToe
{
    public static void main(){
        Scanner s = new Scanner(System.in);
        int state = 0, turn = 1, choice, drawcheck=0;
        
        for(int end=0; end==0; end=end){
            System.out.println("\u000c");
            for(int i =1; i<10; i++){
                if(state%(3^i)==0){
                    System.out.print(" ");
                }
                else if(state%(3^i)==1){
                    System.out.print("X");
                }
                else{
                    System.out.print("O");
                }
                if(i%(3^i)==0){
                    System.out.println("");
                }
                else{
                    System.out.print("|");
                }
            }
            
            System.out.println("Enter State (max 59048)");
            state=s.nextInt();
        }
    }
}

I was trying to make a Tic Tac Toe game, but for some reason this gets a Divide by Zero error? I am an absolute coding noob, can someone help? (I know this isn't the game, I was trying to isolate the parts, this one gets the error)

Answer 1

I have a feeling you are trying to use modulo 3 to the power of i.

However ^ sign means XOR, not power, so it happens, that you get 3 % 0 - which is basically zero division.

If you want to the power i th power of 3 you need Math.pow(3, i)

Answer 2

Hi seems you have mistaken the ^ operator it is XOR

so when i = 3 in binary 11

3^i = 11 XOR 11 => 0

XOR is binary operator and compares bits at i-th index and returns 1 if only one bit at i-th index is 1. This means when you xor same numbers you get 0

[Update] Fixed decimal representation of 3 :p