// CSE 142, Autumn 2009, Marty Stepp
// This program uses variables to compute the bill at a restaurant.
// This second version is improved by prompting for how many people ate
// and using a cumulative sum to add up the cost of their meals.

import java.util.*;

public class Receipt2 {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        
        System.out.print("How many people ate? ");
        int howMany = console.nextInt();
        double subtotal = 0.0;
        
        // read each meal's cost and add them using a cumulative sum
        for (int i = 1; i <= howMany; i++) {
            System.out.print("Person #" + i + 
                             ": How much did your dinner cost? ");
            double cost = console.nextDouble();
            subtotal = subtotal + cost;   // subtotal += cost;
        }
        
        // int subtotal = 38 + 40 + 30;
        System.out.println("Subtotal: " + subtotal);
        
        // Calculate total owed, assuming 8% tax / 15% tip
        double tax = subtotal * .08;
        double tip = subtotal * .15;
        double total = subtotal + tax + tip;
        
        System.out.println("Subtotal: $" + subtotal);
        System.out.println("Tax: $" + tax);
        System.out.println("Tip: $" + tip);
        System.out.println("Total: $" + total);
    }
}