// CSE 142, Spring 2010, Marty Stepp
// This is an improved version of the "Receipt" program from week 2.
// Now it is more flexible because it uses the Scanner and a cumulative sum.
// See also the Receipt3 file for an improved version that uses methods.

import java.util.*;  // for Scanner

public class Receipt2 {
    public static void main(String[] args) {
        System.out.print("How many people ate? ");
        Scanner console = new Scanner(System.in);
        int people = console.nextInt();
        
        // cumulative sum of each person's meal cost
        double subtotal = 0.00;
        for (int i = 1; i <= people; i++) {
            System.out.print("Person #" + i + ": How much did your dinner cost? ");
            double cost = console.nextDouble();
            subtotal = subtotal + cost;
        }
        
        System.out.printf("Subtotal = $%.2f\n", subtotal);
    }
}