用函数方法编程求1!+2t...…+n!
时间: 2024-06-14 10:03:21 浏览: 8
以下是用函数方法编程求1!+2!+...+n!的Python代码:
```python
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
def sum_factorial(n):
sum = 0
for i in range(1, n+1):
sum += factorial(i)
return sum
n = 5
print("1!+2!+...+n!的和为:", sum_factorial(n))
```
相关问题
用c语言函数方法编程求1!+2t...…+n!
以下是使用C语言函数方法编程求1!+2!+...+n!的例子:
```c
#include <stdio.h>
int factorial(int n) {
if (n == 0) {
return 1;
} else {
return n * factorial(n - 1);
}
}
int main() {
int n, sum = 0;
printf("请输入一个正整数n:");
scanf("%d", &n);
for (int i = 1; i <= n; i++) {
sum += factorial(i);
}
printf("1!+2!+...+n!=%d\n", sum);
return 0;
}
```
用函数方法编程求1!+2!+....…+n!
以下是两种方法来编程求1!+2!+....…+n!:
1. C语言方法:
```c
#include <stdio.h>
long fun(int n)
{
long sum = 0, i, j, k = 1;
for (i = 1; i <= n; i++)
{
k = 1;
for (j = 1; j <= i; j++)
{
k *= j;
}
sum += k;
}
return sum;
}
int main()
{
int n;
printf("请输入n的值:");
scanf("%d", &n);
printf("%d的阶乘和为:%ld\n", n, fun(n));
return 0;
}
```
2. Python方法:
```python
def factorial(n):
if n == 1:
return 1
else:
return n * factorial(n-1)
def sum_factorial(n):
sum = 0
for i in range(1, n+1):
sum += factorial(i)
return sum
n = int(input("请输入n的值:"))
print("%d的阶乘和为:%d" % (n, sum_factorial(n)))
```
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![](https://img-home.csdnimg.cn/images/20210720083646.png)
![-](https://csdnimg.cn/download_wenku/file_type_lunwen.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)