using System;
using System.Windows.Forms;
namespace CheckLoginedQQ
{
    public class Checker
    {
        
        public Checker()
        {

        }
        private HtmlDocument Document;
        /// <summary>
        /// 初始化
        /// </summary>
        /// <returns></returns>
        public bool Initialize()
        {
            WebBrowser browser = new WebBrowser();
            browser.Url = new Uri("http://xui.ptlogin2.qq.com/cgi-bin/qlogin");
            while (browser.ReadyState!=WebBrowserReadyState.Complete)
            {
                Application.DoEvents();
            }
            if (browser.Document.Url.AbsoluteUri == "http://xui.ptlogin2.qq.com/cgi-bin/qlogin")
            {
                Document = browser.Document;
                return true;
            }
            return false;
        }
       /// <summary>
       /// 检测登陆账号
       /// </summary>
       /// <param name="uin"></param>
       /// <returns></returns>
       public bool QQisLogined(string uin)
       {
           HtmlElementCollection elements=Document.GetElementsByTagName("input");
           foreach(HtmlElement element in elements)
           {
               string type = element.GetAttribute("type");
               if (type != "radio")
                   continue;
               string name = element.GetAttribute("name");
               if (name != "q_uin")
                   continue;
               string id = element.GetAttribute("id");
               if (id == "uin_" + uin)
               {
                   return true;
               }
           }
           return false;
       }
    }
}

#include "stdafx.h"
#include "stdio.h"
int main(int argc, char* argv[])
{
    int i,a[10];
    for (i=0;i<=9;i++)
    {
        a[i]=i;
    }
    for (i=9;i>=0;i--)
    {
        printf("%d",a[i]);
    }
    printf("\n");
    return 0;
}

    int a[10];
    char c;
    int i;
    for (i=0;i<=9;i++)
    {
        a[i]=i;
    }
    c ='s';