【程序45】

题目：判断一个素数能被几个9整除

//题目错了吧？能被9整除的就不是素数了！所以改成整数了。

import java.util.*;

public class lianxi45 { 

    public static void main (String[] args) { 

        Scanner s = new Scanner(System.in);

        System.out.print("请输入一个整数：");

        int num = s.nextInt();

        int   tmp = num;

        int count = 0; 

        for(int i = 0 ; tmp%9 == 0 ;){

            tmp = tmp/9;

            count ++;

        }

         System.out.println(num+" 能够被 "+count+" 个9整除。");

    }

}

[ 尐鱼儿的QQ群：726994578 ] --- [ https://github.com/godmaybelieve ]