Question

Convert the QuartsToGallons program to an interactive application. Instead of assigning a value to the number of quarts, accept the value from the user as input.

class QuartsToGallonsInteractive

{

   public static void main(String[] args)

   {   

      // Modify the code below

      final int QUARTS_IN_GALLON = 4;

      int quartsNeeded = 18;

      int gallonsNeeded;

      int extraQuartsNeeded;

      gallonsNeeded = quartsNeeded / QUARTS_IN_GALLON;

      extraQuartsNeeded = quartsNeeded % QUARTS_IN_GALLON;

      System.out.println("A job that needs " + quartsNeeded +

         " quarts requires " + gallonsNeeded + " gallons plus " +

         extraQuartsNeeded + " quarts.");

   }

}

Answer 1

import java.util.Scanner;

class QuartsToGallonsInteractive {
    public static void main(String[] args) {
        int QUARTS_IN_GALLON = 4;
        int quartsNeeded;
        int gallonsNeeded;
        int extraQuartsNeeded;

        Scanner in = new Scanner(System.in);
        System.out.print("Enter number of quarts needed: ");
        quartsNeeded = in.nextInt();

        gallonsNeeded = quartsNeeded / QUARTS_IN_GALLON;
        extraQuartsNeeded = quartsNeeded % QUARTS_IN_GALLON;
        System.out.println("A job that needs " + quartsNeeded +
                " quarts requires " + gallonsNeeded + " gallons plus " +
                extraQuartsNeeded + " quarts.");
    }
}