编写函数,求1!+2!+3!+.....+k!的和
时间: 2024-01-22 15:15:31 浏览: 36
以下是一个编写函数求阶乘和的例子:
```python
def factorial_sum(k):
result = 0
factorial = 1
for i in range(1, k+1):
factorial *= i
result += factorial
return result
k = 5
print("Factorial sum:", factorial_sum(k)) # 输出:Factorial sum: 153
```
相关问题
用C语言编写函数,求1!+2!+3!+ ..+K!的和。
以下是用C语言编写函数,求1!+2!+3!+ ..+K!的和的代码:
```c
#include <stdio.h>
int factorial(int n) { // 定义一个求阶乘的函数
int result = 1;
for (int i = 1; i <= n; i++) {
result *= i;
}
return result;
}
int main() {
int k;
printf("请输入k的值:");
scanf("%d", &k);
int sum = 0;
for (int i = 1; i <= k; i++) {
sum += factorial(i); // 求1!+2!+3!+ ..+K!的和
}
printf("1!+2!+3!+ ..+%d!的和为:%d\n", k, sum);
return 0;
}
```
编写函数,求1!+2!+3!+...+k!的和
```c
#include <stdio.h>
int factorial(int n) {
if (n == 0 || n == 1) {
return 1;
} else {
return n * factorial(n - 1);
}
}
int sumOfFactorials(int k) {
int sum = 0;
for (int i = 1; i <= k; i++) {
sum += factorial(i);
}
return sum;
}
int main() {
int k, result;
printf("请输入一个整数k:");
scanf("%d", &k);
result = sumOfFactorials(k);
printf("1!+2!+3!+...+%d!的和为:%d\n", k, result);
return 0;
}
```