Stage 1
● shop which only sells apples and oranges ● checkout system which takes a list of items and outputs the total cost ● Apples cost 60p and oranges cost 25p. ● For example: [ Apple, Apple, Orange, Apple ] => £2.05 ● To play, modify ShopTillTest (there is no Main)
Step 2: Simple offers
● The shop decides to introduce two new offers ○ buy one, get one free on Apples ○ 3 for the price of 2 on Oranges ● Update your checkout functions accordingly