// (Extra program; we did not do this one in class!)
// 
// A program that prompts the user for numbers and prints
// the difference between each pair of numbers.
// This might be a useful idea for you to use in HW5.

import java.util.*;

public class Difference {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        
        System.out.println("Type 10 numbers, and I'll tell you their difference.");
        
        // read first number separately to solve fencepost problem
        System.out.print("Type a number: ");
        int previous = console.nextInt();
        
        for (int i = 1; i <= 10; i++) {
            System.out.print("Type a number: ");
            int next = console.nextInt();
            
            int difference = next - previous;
            System.out.println("Difference = " + difference);
            
            // update the previous for the next pass through the loop
            previous = next;
        }
    }
}