蓝桥杯基础练习VIP-阶乘计算 （C语言代码）

解题思路:





注意事项:





参考代码:

#define _CRT_SECURE_NO_DEPRECATE

#define MAXN 10050

#include <stdio.h>

#include <iostream>

#include <string.h>

#include <string>

#include <math.h>

#include <algorithm>

using namespace std;

int a[MAXN];

int main() {

int n;

while (scanf("%d", &n) != EOF) {

memset(a, 0, sizeof(a));

int num = 0;

a[0] = 1;

for (int i = 1; i <= n; i++) {

for (int j = 0; j < MAXN; j++) {

a[j] = a[j] * i + num;

num = a[j] / 10;

a[j] %= 10;

}

}

int len;

for (int i = MAXN - 1; i >= 0; i--) {

if (a[i] != 0) {

len = i;

break;

}

}

for (int i = len; i >= 0; i--) {

printf("%d", a[i]);

}

printf("\n");

}

return 0;

}