截断整数而不舍入吗？

Question

我做了一个程序，它接受零钱，计算出多少美元，以及剩余的零钱。它的设置方式是，取变化量，例如495，然后转换成美元，4.95。现在我想把0.95去掉，剩下4，如果不四舍五入到5，我怎么做呢？谢谢！在

def main():
pennies = int(input("Enter pennies : "))
nickels = int(input("Enter nickels : "))
dimes = int(input("Enter dimes : "))
quarters = int(input("Enter quarters : "))

computeValue(pennies, nickels, dimes, quarters)

def computeValue(p,n,d,q):
print("You entered : ")
print("\tPennies  : " , p)
print("\tNickels  : " , n)
print("\tDimes    : " , d)
print("\tQuarters : " , q)

totalCents = p + n*5 + d*10 + q*25
totalDollars = totalCents / 100
totalDollarsTrunc = int(format(totalDollars, '.0f'))
totalPennies = totalCents - (totalDollarsTrunc * 100)

print("Amount of Change = ", totalDollarsTrunc, "dollars and ", totalPennies ,"cents.")

if totalCents < 100:
    print("Amount not = to $1")
elif totalCents == 100:
    print("You have exactly $1.")
elif totalCents >100:
    print("Amount not = to $1")
else:
    print("Error")

Answer 1

函数int（）就可以做到这一点

Answer 2

在Python中，int()在从float转换时截断：

>>> int(4.95)
4

也就是说，你可以重写

^{pr2}$

使用divmod函数：

totalDollars, totalPennies = divmod(totalCents, 100)

Answer 3

您可能需要使用math.ceil或math.floor来向您想要的方向舍入。在