建立類java
LoginDemo3spa
這裏取反3d
!(n%3==0)code
package com.imooc.operator; import java.util.Scanner; public class LoginDemo3 { public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("請輸入一個整數"); Scanner sc=new Scanner(System.in); int n=sc.nextInt(); //可否被3整除 就是對3取餘 if(!(n%3==0)){ System.out.println(n+"不能被3整數!"); }else{ System.out.println(n+"能被3整數!"); } } }