Linux命令

1.mkdir a1mkdir b1mkdir c1cd a1mkdir a2mkdir b2cd c1mkdir c2mkdir d22.useradd aapasswd aauseradd bbpasswd bbuseradd ccpasswd ccgroupadd gggpasswd –a aa gggpasswd –a bb ggvi /etc/groupcp /etc/group /tmp/file1chown aa :gg /tmp/file1chmod 750 /tmp/file1ls –l3.vi chengji.cinclude<stdio.h>main(){int num;printf("plz ,input source!");scanf("%d",&num);if(num>=90) printf("A");if(num<90&&num>=80) printf("B");if(num<80&&num>=70) printf("C");if(num<70&&num>=60) pr

code

import java.awt.*; import java.awt.event.*; public class Tanke { public static void main(String[] args) { Frame w = new Frame(); w.setSize(1024, 768); // w.setBackground(Color.BLACK); MyPanel mp = new MyPanel(); w.add(mp); w.addKeyListener(mp); mp.addKeyListener(mp); w.show(); } } class MyPanel extends Panel implements KeyListener{ int x1,x,y,fx; public void pd(int fx,int x,int y,Graphics g){ if(fx==1){

java坦克雏形

package cn.skyour.tank;import java.awt.*;public class Tank {public static void main(String[] args) { Frame w = new Frame(); w.setSize(1024, 768);// w.setBackground(Color.BLACK); MyPanel mp = new MyPanel(); w.add(mp); Thread t = new Thread(mp); t.start(); w.show(); } }class MyPanel extends Panel implements Runnable{int x[] = new int[3]; int y[] = new int[3]; public MyPanel(){ for(int i=0;i<1;i++){ x[i]=505; y[i]=500; } } public void pai

JAVA区间随礼数

int Min = 5;int Max = 10;int result = Min + (int)(Math.random() * ((Max - Min) + 1));

物联网三方位