Ruby

So I'm assigned to make a cash register for my Ruby class. I'm still working on it so the code might look weird. But I'm stuck on trying how to figure out how to keep track of how many item prices I'm entering while using option #1. I Get them all to add, but we are assigned to total the number of items when we total. How would I come to getting how many times I used the number and added a correct item price??

Code is below:

laborCharge = 0

discount = 0

totalPrice = 0

totalItemCount = 0

menuType = 0

menuID = -1

puts ("Welcome to the CIT Cash Register!")

puts

while menuID != 0

puts

puts

puts

puts ("Menu ID\t\tMenu Item")

puts ("-------\t\t---------")

puts ("1\t\t\tAdd Item Charge")

puts ("2\t\t\tAdd Labor Charge")

puts ("3\t\t\tApply Discount")

puts("4\t\t\tApply Gift Card")

puts("5\t\t\tTotal")

puts("9\t\t\tNew Transaction")

puts("0\t\t\tExit Application")

puts

print("Enter Menu ID: ")

menuID = gets().to_i()

case menuID

when 1

print("Enter item's charge amount: $")

itemCharge = gets().to_f()

itemCharge = itemCharge.round(2)

totalPrice += itemCharge

if itemCharge < 0.0

puts ("Item charge amount must be greater than 0. You entered " + itemCharge.to_s())

end

when 2

if laborCharge > 0

puts ("Labor charge has already been applied.")

else

print ("Enter labor charge amount: $")

ls = gets().to_f()

ls = ls.round(2)

if ls > 0.0

laborCharge = ls

else

puts ("Labor charge has to be greater than 0. You entered " + ls.to_s)

end

end

when 3

if discount > 0

puts ("Discount already applied.")

else

print("Enter discount percentage (5, 10 or 15): ")

da = gets().to_i()

if da == 5 or da == 10 or da == 15

discount = da

else

puts ("Discount percentage must be 5, 10, or 15. You entered " + da.to_s())

end

end

when 4

print("Enter gift card amount: $")

giftCard = gets().to_f()

giftCard = giftCard.round(2)

if giftCard < 0.0

puts ("Gift cars amount must be greater than 0. You entered " + giftCard.to_s())

end

when 5

puts ("Receipt")

puts ("Description\t\tQuantity\t\tAmount")

puts ("-----------\t\t--------\t\t------")

puts ("Items\t\t\t#{totalItemCount}\t\t\t#{totalPrice}")

puts ("Discount")

puts ("Tax")

puts ("Labor")

puts ("Grand Total")

puts

puts ("Gift Cards")

puts

puts

puts ("Please Pay Amount\t\t\t\t")

when 9

laborCharge = 0

discount = 0

totalPrice = 0

totalItemCount = 0

menuType = 0

when 0

puts ("Thanks for using the cash register.")

end

end