/** Travel.java is the answer to Q5 on Sample Exam 1 */
import java.util.Scanner;
public class Travel {
  /** read in info about trips and calculate prices */
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int numTrips=0, noDiscount=0;
    // Part 1 and 5. Loop and read until end of input using 
    // Scanner method hasNext
    System.out.println("Enter ID number, ^D to exit: ");
    while(sc.hasNext()) {
      int idnum = sc.nextInt();
      double miles = sc.nextDouble();
      double pricePerMile = sc.nextDouble();
      // Part 2: Compute and print base price
      double basePrice = miles*pricePerMile;
      // Part 3 and 4: calculate discount 
      final double DISCOUNT = .075;
      double finalPrice = basePrice;
      if (miles >= 20) {
        System.out.println("The trip gets a discount of " +
                           DISCOUNT*basePrice + ".");
        finalPrice = basePrice - DISCOUNT*basePrice;
      }
      else {
        System.out.println("The trip does not get a discount.");
        noDiscount++; // counter for Part 6
      }
      numTrips++; // counter for Part 6
      System.out.println("id: " + idnum + " final price: "
                           + finalPrice);
    } // end while
    // Part 6: Print counters
    System.out.println(numTrips + " trips, " + noDiscount +
                       " trips without a discount.");
  }
}