day05_Factorial

package day05;

import java.util.Iterator;
import java.util.Scanner;

public class Factorial {

	public static void main(String[] args) {
		long fact = 1;
		int n;

		System.out.printf("정수를 입력하시오:");
		Scanner scan = new Scanner(System.in);
		n = scan.nextInt();

		for (int i = 1; i <= n; i++) 
			fact = fact * i;


		System.out.printf("%d!은 %d입니다.", n, fact);

	}

}

출력결과