Java, item shop discount math error -


this program meant act shop, number being inputted corresponding item , quantity. catch if want 3 or more items receive 10% discount on purchase , decimals should truncated (staying within whole numbers of int data type). program run, the discount isn't calculated , stated 0 though program run. check out!

int item, longsword, shortsword, warhammer, ring, potion, itemcost, quantity, discount, totalcost, finalcost;      system.out.print("item number: ");     item = keyboard.nextint();      final int longsword = 120;     final int shortsword = 90;     final int warhammer = 80;     final int ring = 150;     final int potion = 10;      itemcost = 0;      if (item == 1)     {         itemcost = longsword;     }      if (item == 2)     {         itemcost = shortsword;     }         if (item == 3)     {         itemcost = warhammer;     }         if (item == 4)     {         itemcost = ring;     }      if (item == 5)     {         itemcost = potion;     }      system.out.print("quantity of item: ");     quantity = keyboard.nextint();        totalcost = itemcost * quantity;      system.out.println("total cost: " + totalcost);      if (quantity >= 3)     {         discount = totalcost * (1/10);     }      else     {         discount = 0;     }      system.out.println("discount: " + discount);

you experiencing oh-so-common integer division issue.

discount = totalcost * (1/10);

1/10 0, discount 0. use instead:

discount = (int) (totalcost * (0.1));

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