How do I go about it please

Question

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();

//your code goes here
for(int x; x<arr.length; x++)
{
System.out.println (x);
}
}
}

Answer 1

What is the code supposed to do?