python 数字的阶乘_Python程序使用循环查找数字阶乘

ゝ一世哀愁。 2022-12-07 13:58 167阅读 0赞

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python 数字的阶乘

Here you will get python program to find factorial of number using for and while loop.

在这里，您将获得python程序，以使用for和while循环查找数字的阶乘。

Factorial of a number is calculated by multiplying it with all the numbers below it starting from 1.

数字的阶乘是通过将其乘以1以下的所有数字来计算的。

For example factorial of 4 is 24 (1 x 2 x 3 x 4).

例如，阶乘4是24(1 x 2 x 3 x 4)。

Below program takes a number from user as an input and find its factorial.

下面的程序将用户的数字作为输入并找到其阶乘。

## Python程序查找数字阶乘 **(**Python Program to Find Factorial of Number**)** ##

### 使用For循环 **(**Using For Loop**)** ###

num = int(input("enter a number: "))
     
    fac = 1
     
    for i in range(1, num + 1):
    	fac = fac * i
     
    print("factorial of ", num, " is ", fac)

**Output**

**输出量**

*enter a number: 5* *factorial of 5 is 120*

*输入数字：5的5* *阶乘是120*

### 使用While循环 **(**Using While Loop**)** ###

num = int(input("enter a number: "))
     
    fac = 1
    i = 1
     
    while i <= num:
    	fac = fac * i
    	i = i + 1
     
    print("factorial of ", num, " is ", fac)

**Output**

**输出量**

*enter a number: 4* *factorial of 4 is 24*

*输入数字：4的* *阶乘为24*

### 影片教学 **(**Video Tutorial**)** ###

> 翻译自: [https://www.thecrazyprogrammer.com/2017/04/python-program-find-factorial-number-using-loop.html][https_www.thecrazyprogrammer.com_2017_04_python-program-find-factorial-number-using-loop.html]

python 数字的阶乘

[396a2ea957735e6f57da1463123d96c0.png]: /images/20221123/7391545840c14725b729dfd32110d970.png
[https_www.thecrazyprogrammer.com_2017_04_python-program-find-factorial-number-using-loop.html]: https://www.thecrazyprogrammer.com/2017/04/python-program-find-factorial-number-using-loop.html