/* Grocery Store Program

SAMPLE RUNS
-----------------
enter item (type, ounces, $/pound): 
Candy 16 $5.00
1 pound(s) of Candy is 
$5.00 gross
-0.00 discount
---------------
$5.00 total

enter item (type, ounces, $/pound):
Fruit 32 $1.50
2 pound(s) of Fruit is
$3.00 gross
-0.30 discount
---------------
$2.70 total

enter item (type, ounces, $/pound):
Candy 24 $6.00
1.5 pound(s) of Candy is
$9.00 gross
-0.50 discount
---------------
$8.50 total

# of tests needed == 8 as follows
1 invalid candy price
3 valid candy: no discount, .50 and 3.00 discounts
4 fruit: no discount, 10%, 15%, 20%

*/

   import java.util.Scanner;

   public class grocery
   {
      public static void main(String[] args)
      {	
         Scanner keys = new Scanner(System.in);
         String item, priceString;
         int ounces;  // weight in ounces
         double price;  // dollars/pound
         double pounds, gross;
         final int OZPERLB = 16; // ounces per pound
         double discount = 0.0;
      
      
         System.out.println("enter item (type, ounces, $/pound):");
         item = keys.next();
         ounces = keys.nextInt();
         priceString = keys.next().substring(1); // get rid of $
         price = Double.parseDouble(priceString);
      
         if (item.equalsIgnoreCase("candy") && price < 5.00)
         {
            System.out.println("invalid candy price, must be >= $5.00");
         // System.exit(1);  // force program to quit    
         }
         else { // valid - process
         
            pounds = (double) ounces / OZPERLB;
            gross = price * pounds;
         
            System.out.println(pounds + " pound(s) of " + item + " is ");
            System.out.printf("$%.2f gross\n", gross);
         	
            if (item.equalsIgnoreCase("candy"))
            {
               if (pounds > 1 && pounds < 2.5)
                  discount = .5;
               else if (pounds >= 2.5)
                  discount = 3.0;
            }
            else if (item.equalsIgnoreCase("fruit"))
            {
               if (pounds > 5)
                  discount = 0.2;
               else if (pounds >= 3)
                  discount = .15;
               else if (pounds > 1)
                  discount = 0.1;	
               discount = discount * gross;		
            }
            System.out.printf("$%.2f discount\n", discount);
            System.out.println("-----------------");
            System.out.printf("$%.2f total\n", gross - discount);
         	
         } // process valid
      
      } // end of main
   } // end of class