递归求阶乘

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
int Factorial(int n) {
	if (n == 1) {
		return 1;
	}
	else {
		return n*Factorial (n - 1);
	}
}
int main() {
	int n, sum;
	printf("输入阶乘数\n");
	scanf("%d", &n);
	sum = Factorial(n);
	printf("%d\n", sum);
	system("pause");
	return 0;
}