/**
 * This class requests to
 * input a number and
 * prints each of its digits
 * with a new line or
 * prints an error if parsing fails.
 */

import java.util.Scanner;

public class NumbersPrintLn {

	public static void main(String[] args) {
		printDigits(requestNumberInput());
	}

	private static String requestNumberInput() {
		Scanner scan = new Scanner(System.in);
		System.out.print("Input any number: ");

		while (true) {
			try {
				int number = Integer.parseInt(scan.nextLine());
				return String.valueOf(number);
			} catch (NumberFormatException e) {
				System.out.print("Incorrect input. Try again: ");
			}
		}
	}

	private static void printDigits(String digits) {
		char numberCharArr[] = digits.toCharArray();
		for (int i = 0; i < numberCharArr.length; i++) {
			System.out.println(numberCharArr[i]);
		}
	}
}