// 再帰を使わない階乗
 
 #include <iostream>
 
 using namespace std;
 
 int factrial(int n)
 {
 	int x=1;
 	cout << "n!: ";
 	for(int i=n; i>0; i--){
 		cout << i << " ";
 		x*=i;
     }
 	cout << endl;
 	return x;
 }
 
 int main()
 {
     int n;
     cout << "nを入力:";
     cin >> n;
     cout << "n = " << n << "  n! = " << factrial(n) <<endl;
     return 0;
 }