计算s = 1!+2!+3!+…+n!的源程序,书写阶乘函数,并调用上面式子
时间: 2023-11-24 18:52:11 浏览: 64
以下是计算s = 1!+2!+3!+…+n!的Python源程序,包括阶乘函数的书写和上述式子的调用:
```python
# 定义阶乘函数
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
# 计算1!+2!+3!+...+n!
def lj(n):
s = 0
for i in range(1, n+1):
s += factorial(i)
return s
# 调用函数计算s
n = 10
s = lj(n)
print("s =", s)
```
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计算s = 1!+2!+3!+…+n!的源程序,书写阶乘函数,并调用求上面式子
以下是计算s = 1!+2!+3!+…+n!的Python源程序,包括阶乘函数的书写和调用:
```python
# 定义阶乘函数
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
# 计算s = 1!+2!+3!+…+n!
def lj(n):
s = 0
for i in range(1, n+1):
s += factorial(i)
return s
# 调用函数计算s
n = 5
print("s = ", lj(n)) # 输出:s = 153
```
计算s = 1!+2!+3!+…+n!的源程序,书写阶乘函数,并调用求上面式子
```c
#include <iostream>
using namespace std;
int factorial(int n) {
if (n == 0 || n == 1) {
return 1;
} else {
return n * factorial(n - 1);
}
}
int lj(int i) {
int sum1;
if (i == 0) {
sum1 = 0;
} else {
sum1 = lj(i - 1) + factorial(i);
}
return sum1;
}
int main() {
int n = 5; // 例如计算1!+2!+3!+4!+5!
int result = lj(n);
cout << "The result is: " << result << endl;
return 0;
}
```
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