问题一:启动提示VirtualBox kernel driver not installed. 问题描述: VirtualBox kernel driver not installed. The vboxdrv kernel module was either not loaded or /dev/vboxdrv was not created for some reason. Please in
/*** Created by Administrator on 2016/9/22 0022.*///依赖的模块var http=require('http');var fs=require('fs');var cheerio=require('cheerio');var request=require('request');var iconv = require('iconv-l
分支结构 一、扫描仪 Scanner[JavaSE 阶段重点应用] 创建一个扫描仪对象 java.util.Scanner sc = new java.util.Scanner(System.in); 使用扫描仪 int n = sc.nextInt();//输入一个整数 double d = sc.nextDouble(); //输入一个小数String s = sc.next()