2021-12-02 求n的阶乘。

#include
int main()
{
	int i=1;
	long n;
	int fact=1;
	printf("please input the number:n");
	scanf("%ld",&n);
	while(i<=n)
	{
		fact=fact*i;
		i++;
	 } 
	 printf("%ld!=%ldn",n,fact);
	return 0;
}