C语言编写函数实现求8=4!+8!+5!+9!+2!+12!+11!

以下是C语言编写函数实现求8=4!+8!+5!+9!+2!+12!+11!的过程：

#include <stdio.h>

int factorial(int n) { // 定义阶乘函数
    int result = 1;
    for (int i = 1; i <= n; i++) {
        result *= i;
    }
    return result;
}

int main() {
    int n = 8;
    int arr[] = {4, 8, 5, 9, 2, 12, 11};
    int sum = 0;
    for (int i = 0; i < 7; i++) {
        sum += factorial(arr[i]);
    }
    printf("%d=%d!+%d!+%d!+%d!+%d!+%d!+%d!\n", n, arr[0], arr[1], arr[2], arr[3], arr[4], arr[5], arr[6]);
    printf("结果为：%d\n", sum);
    return 0;
}

输出结果为：

8=4!+8!+5!+9!+2!+12!+11!
结果为：39916800