TQC+ JAVA 401

TQC+ JAVA 401 第迴階層計算

import java.util.Scanner;
public class JPA04 {
    static Scanner keyboard = new Scanner(System.in);
    public static void main(String args[]) {
     int n;



    while(true){
        System.out.print("Input n ( 0 <= n <=16 )：");
        n=keyboard.nextInt();
        if(n==999 ) break;
        System.out.printf("%d 的階乘= %d %n",n,fac(n));
    }
    }
    static int fac(int a){
    if(a==0)
    return 1;
    else
    return fac(a-1)*a;
    }

}