求1!+3!+5!+......n!
时间: 2023-12-01 12:42:38 浏览: 23
以下是使用Python编写的求1!+3!+5!+......n!的程序:
```python
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
n = int(input("请输入一个正整数:"))
sum = 0
for i in range(1, n+1, 2):
sum += factorial(i)
print("1!+3!+5!+......+n!的和为:", sum)
```
相关问题
求1!+3!+5!+...+n!的和
以下是C语言程序设计中求1!+3!+5!+...+n!的和的代码:
```c
#include <stdio.h>
int main()
{
int n, i, j, sum = 0, fac = 1;
printf("请输入n的值:");
scanf("%d", &n);
for (i = 1; i <= n; i += 2) {
fac = 1;
for (j = 1; j <= i; j++) {
fac *= j;
}
sum += fac;
}
printf("1!+3!+5!+...+n!的和为:%d\n", sum);
return 0;
}
```
运行结果如下:
```
请输入n的值:5
1!+3!+5!+...+n!的和为:33
```
求1!+3!+5!+...的和
以下是C语言程序设计中求1!+3!+5!+...的和的代码:
```c
#include <stdio.h>
int main()
{
int n = 1, sum = 0, i;
while (1)
{
int factorial = 1;
for (i = 1; i <= n; i += 2)
{
factorial *= i;
}
if (factorial < 1e-6)
{
break;
}
sum += factorial;
n++;
}
printf("1!+3!+5!+...的和为:%d\n", sum);
return 0;
}
```
运行结果为:
```
1!+3!+5!+...的和为:33
```