[Algorithm 02] Vending Machine

※トップ画像はPixabayから引用しています

釣り銭計算

import sys

def keyboard_input(word='input'):
   input_num = input('%s: ' % word)
   if not input_num.isdecimal():
       print('please input an integer withount comma')
       sys.exit()
   return input_num


input_price = keyboard_input('input')
product_price = keyboard_input('product')

change = int(input_price) - int(product_price)

if change < 0:
   print('not enough money')
   sys.exit()

coins = [10000, 5000, 1000, 500, 100, 50, 10, 5, 1]
for coin in coins:
   rest = change // coin
   change %= coin
   print(str(coin) + ': ' + str(rest))