Shopping cart

Question

Hi all, I dont really understand this solution for the shopping cart problem. especially the bit where its says total = 0 and "for c in cart". where is this coming from?

cart = [15, 42, 120, 9, 5, 380]

discount = int(input())
total = 0

for c in cart:
total = total + (c - c*discount/100)
print(total)

Answer 1

total is a variable which hold 0

'for c in cart' is a for loop where 'c' contains each value of list 'cart'

Here you are adding discounted value to variable 'total'

for loop will access each value in a iterator value 'c' which is used to get discounted value.

So if you enter 5 then discounted amount will be

15 - 15 * 5 / 100 +
42 - 42 * 5 / 100 +
120 - 120 * 5 / 100 +
9 - 9 * 5 / 100 +
5 - 5 * 5 / 100 +
380 - 380 * 5 / 100

= Total