#include <stdio.h>
int factorial1(int n)
{
	int total = 1;
	for (int i = 1; i <= n; i++)
	{
		total *= i;
	}
	return total;
}
int factorial2(int n)
{
	if (n <= 1)
		return 1;
	else
	return n*factorial2(n - 1);
}
int main()
{
	printf("%d\n"
 
, factorial1(3));
	printf("%d\n", factorial2(4));
		return 0;
}

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