ProgBasics05while-Loop-P06accountBalance

import java.util.Scanner;

public class P06accountBalance {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        {

            int n = Integer.parseInt(scanner.nextLine());

            int counter = 0;

            double balance = 0.0;

            while (counter < n) {

                double amount = Double.parseDouble(scanner.nextLine());

                if (amount < 0) {

                    System.out.println("Invalid operation!");
                    break;

                }

                balance += amount;

                System.out.printf("Increase: %.2f%n", amount);

                counter++;



            }System.out.printf("Total: %.2f", balance);
        }
    }
}