Question

Enter an integer: 20

20 plus 10 is 30.

20 plus 100 is 120.

20 plus 1000 is 1020.

Answer 1

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        System.out.println("Enter an integer:");
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        for (int i = 10; i < 10000; i *= 10) {
            System.out.println(n + " plus " + i + " is " + (n + i));
        }
    }
}