ex 6

package com.company;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int[] bnotes = new int[]{ 50, 20, 10, 5};
        int[] counter = new int[4];
        int amount;
        System.out.println("Enter amount:"); amount = in.nextInt();
        if(amount < 0)
            System.out.println("You cannot enter negative values!");
        if(amount < 5)
            System.out.println("You cannot withdraw less than 5 pounds.");
        if(amount > 250)
            System.out.println("You cannot withdraw more then 250 pounds.");

        for (int i = 0; i < 4; i++) {
            if (amount >= bnotes[i]) {
                counter[i] = amount / bnotes[i];
                amount = amount - counter[i] * bnotes[i];
            }
        }
        for (int i = 0; i < 4; i++) {
            if (counter[i] != 0) {
                System.out.println("£"+bnotes[i] + ": " + counter[i]);
            }
        }
    }
}