6.22

package com.company;
/*
Amon Guinan
Wednesday, January 23, 2019
*/
//Prints ints except 20.

import java.util.Scanner;

public class six_twentyTwo {
    public static void main(String [] args)
    {
        System.out.print("Enter a starting integer: ");
        Scanner input = new Scanner(System.in);
        int y = input.nextInt();
        if (y == 20)
        {
            System.out.print("No 20 allowed.");
            System.exit(20);
        }
        int i;
        do {
            i = input.nextInt();
            if (i == 20)
            {
                System.out.print("No 20 allowed.");
                System.exit(20);
            }
            System.out.println(i);
        }
        while((i>=y)&&(i!=20));
    }
}