用Python计算前n个自然数的阶乘之和1!+2!+3!+……+n!
时间: 2023-11-24 22:51:34 浏览: 44
以下是Python计算前n个自然数的阶乘之和的代码实现:
```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 = int(input("请输入你要求的前n个数的阶乘的和: "))
print("1~%d数字阶乘的和为:%d" % (n, sum_factorial(n)))
```
相关问题
计算前n个自然数的阶乘之和1!+2!+3!+……+n!
以下是C语言实现前n个自然数的阶乘之和的代码:
```c
#include <stdio.h>
int main() {
int n, i, j;
long long sum = 0, fac = 1;
printf("请输入你要求的前n个数的阶乘的和: ");
scanf("%d", &n);
for (i = 1; i <= n; i++) {
fac = 1;
for (j = 1; j <= i; j++) {
fac *= j;
}
sum += fac;
}
printf("1!+2!+3!+...+%d! = %lld\n", n, sum);
return 0;
}
```
运行结果:
```
请输入你要求的前n个数的阶乘的和: 5
1!+2!+3!+...+5! = 153
```
python计算前n个自然数的阶乘之和1!+2!+3!+...+n!
以下是Python计算前n个自然数的阶乘之和的代码实现:
```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 = int(input("请输入你要求的前n个数的阶乘的和:"))
print("前n个数的阶乘的和为:", sum_factorial(n))
```