[10872] 팩토리얼

#include <iostream>
using namespace std;
int iterative_factorial(int n);
int main()
{
	int n;
	cin >> n ;
	cout << iterative_factorial(n) << endl;
	return 0;
}
int iterative_factorial(int n)
{
	int i, factorial = 1;
	for (i = n; i > 0; i--) 
		factorial *= i;
	return factorial;
}