Question

我的货币计数脚本出现问题。它工作正常，但是我需要用两种方式格式化输出，但是我不能使用任何字符串函数，包括format，但是我想使用math lib floor ceil函数。

In [183]: c = {0: array([4., 5., 0 ]), 1: array([3, 4]), 2: array([1, 1.])}          
In [185]: [np.allclose(a[k],c[k]) for k in a]                                        
....
ValueError: operands could not be broadcast together with shapes (2,) (3,)

我当前的输出是：

import math

coins1 = int(input("Quantity of 1 cent coins ? ")) * 0.01

coins2 = int(input("Quantity of 2 cent coins ? ")) * 0.02

coins3 = int(input("Quantity of 5 cent coins ? ")) * 0.05

coins4 = int(input("Quantity of 10 cent coins ? ")) * 0.10

coins5 = int(input("Quantity of 20 cent coins ? ")) * 0.20

coins6 = int(input("Quantity of 50 cent coins ? ")) * 0.50

coins7 = int(input("Quantity of 1 euro coins ? ")) * 1

coins8 = int(input("Quantity of 2 euro coins ? ")) * 2

bills1 = int(input("Quantity of 5 euro bills ? ")) * 5

bills2 = int(input("Quantity of 10 euro bills ? ")) * 10

bills3 = int(input("Quantity of 20 euro bills ? ")) * 20

bills4 = int(input("Quantity of 50 euro bills ? ")) * 50



total = coins1 + coins2 + coins3 + coins4 + coins5 + coins6 + coins7 + coins8 + coins1 + bills2 + bills3 + bills4


print("You've got", total, "euro and",)

我的目标是：

You've got 32792039464.8 euro and

Answer 1

只需使用int()即可得到整数部分，而取模%即可得到小数部分：

print("You've got", int(total), "euro and", total % 1, "cents.")

您会很快发现经典的浮点数问题：）

Answer 2

首先，您需要将％1的总数乘以100，以得到美分的价值，即美分。

cents = math.ceil(total%1 * 100) ## for 32792039464.8 cents will be 0.8. times 100 is 80.
total = math.floor(total - cents/100) ## round the number down

print("You've got", total, "euro and ", cents, " cents.")

您还可以使用此：

cents = round(total%1 * 100) ## for 32792039464.8 cents will be 0.8. times 100 is 80 cents.
total = round(total - cents/100) ## round the total down. 32792039464.8 to 32792039464

print("You've got", total, "euro and ", cents, " cents")

货币计数脚本问题

2 个答案: