// Tyler Rigsby, CSE 142
// Scans a file of temperatures and reports the change for each day.

import java.util.*;
import java.io.*;

public class Temperatures {
    public static void main(String[] args) throws FileNotFoundException {
        File f = new File("weather.txt");
        Scanner input = new Scanner(f);
        
        double temp1 = input.nextDouble();
        String garbage = "";

        // while there's still tokens in the file
        while (input.hasNext()) {
            // if the next one is a double...
            if (input.hasNextDouble()) {
                double temp2 = input.nextDouble();
                System.out.println(temp1 + ", " + temp2 + ", change is: " +
                        (temp2 - temp1));
                temp1 = temp2;
            } else { // if it's anything else...
                garbage += (input.next() + " ");
            }
        }
        System.out.println("The garbage was " + garbage);
    }
}