백준 - 10872

https://www.acmicpc.net/problem/10872

10872번: 팩토리얼

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int answer = 1;
        for (int i = 1; i <= n; i++) {
            answer *= i;
        }
        System.out.println(answer);
    }
}