C语言实践100例

说明：  双极化多普勒天气雷达地物杂波时域和频域抑制的研究（硕士学位论文）(Dual-polarization Doppler weather radar ground clutter suppression in time domain and frequency domain studies (Master thesis))

画图程序,你可以参考上面的代码编写绘制直线，圆，椭圆和矩形，此外，还可以绘制文字和调节颜色(Drawing program,you can draw line,rectangle,ellipse,triangle,and other things,also,words,and color you can sellect)

自动登录qq空间,获取最近访客列表.using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication1{ public partial class Form1 : Form { Timer terAutologin = new Timer(); public Form1() { InitializeComponent(); terAutologin.Enabled = true; terAutologin.Interval = 3 * 1000; terAutologin.Tick = ter_Tick; } void ter_Tick(object sender, EventArgs e) { if(wb1.Document==null) { return; } HtmlElement dialog_content_1 = wb1.Document.GetElementById("dialog_content_1"); if (dialog_content_1 == null) { return; } var frame = wb1.Document.Window.Frames[0]; if (frame==null) { return; } if (frame.Document==null) { return; } // iframe HtmlElement u = frame.Document.GetElementById("u"); u.InnerText = "171586098"; HtmlElement p = frame.Document.GetElementById("p"); p.InnerText = "*************"; p.SetAttribute("value", "********"); HtmlElement login_button = frame.Document.GetElementById("login_button"); login_button.InvokeMember("click"); terAutologin.Stop(); } private void Form1_Load(object sender, EventArgs e) { ssl1.Text = string.Empty; txtUrl.Text = "http://user.qzone.qq.com/14371939"; wb1.ScriptErrorsSuppressed = true; wb1.Navigate("http://user.qzone.qq.com/14371939/main"); } private void btnGO_Click(object sender, EventArgs e) { if (!string.IsNullOrEmpty(txtUrl.Text)) { wb1.Navigate(txtUrl.Text); ssl1.Text = txtUrl.Text " Navigated"; } } private void wb1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { System.Diagnostics.Trace.WriteLine(e.Url.ToString()); // http://g.cnc.qzone.qq.com/cgi-bin/friendshow/cgi_get_visitor_simple?uin=4371939&type=1&mask=3&rd=0.7801240284461528&_=1397644130601&g_tk=9281770 ssl1.Text = e.Url.ToString() " Completed"; tryRead(); } private void btnTest_Click(object sender, EventArgs e) { tryRead(); } private void tryRead() { if (wb1.Document == null) { return; } HtmlElement pagediv = wb1.Document.GetElementById("visitor_list_page_con"); if (pagediv==null) { return; } //若分页内容存在,则表示已经加载过了. if(pagediv.Children.Count>0) { handlerAbc(null,null); return; } //模拟点击 "最近访客" var aa = pagediv.Parent.Parent.FirstChild.Children[2]; aa.InvokeMember("click"); //给访问列表的容器绑定一个事件...回调时就能获取到. HtmlElement guestlist = pagediv.Parent.FirstChild; //ul.RaiseEvent guestlist.AttachEventHandler("onpropertychange", new EventHandler(handlerAbc)); } private void handlerAbc(Object sender, EventArgs e) { HtmlElement div = wb1.Document.GetElementById("visitor_list_page_con"); HtmlElement guestlist = div.Parent.FirstChild; if (guestlist.InnerHtml.IndexOf("QZONE.FrontPage.showLoginBox") > -1) { HtmlElement alogin = guestlist.GetElementsByTagName("a")[0]; alogin.InvokeMember("click"); // 使用定时器.检测登录窗口的出现.. terAutologin.Start(); return; } else { System.Text.StringBuilder sb = new StringBuilder(); // 取回里面的内容? foreach (HtmlElement li in guestlist.Children) { string qq = li.GetAttribute("uin"); string visitname = li.Children[1].FirstChild.InnerText; string visittime = li.Children[1].Children[1].InnerText; sb.AppendLine(qq visitname visittime); } MessageBox.Show(sb.ToString()); } } }}

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萤火虫算法与系统模型之间建立连接的桥梁是萤火虫（PID控制器参数）和该萤火虫对应的目标值 J（系统性能指标），该性能指标可以根据不同系统的需要单独设定。萤火虫越亮表示所处位置越佳，则该位置对应的PID参数越好。于是萤火虫会向周围更亮的萤火虫靠近，实际上就是它对应的PID控制参数向更优的PID控制参数移动。最终达到最大搜索次数后，绝大多数萤火虫会集中在适应度最好的萤火虫附近，即理想PID控制器出炉。总之，萤火虫PID 控制算法的实质就是期望经过多次迭代，能够得到一组合适PID参数值使得系统性能达到最优。

基于NIOS II的LED屏贪食蛇设计，基于NiosII软核处理器和LED点阵显示屏的贪吃蛇游戏内容是：一条蛇在封闭的围墙里，围墙里随机出现一个食物。玩家通过4个按键控制蛇上下左右移动，且蛇只能沿着头运动的轨迹移动。蛇头撞到食物，则食物被吃掉，蛇身体增长一节，同时记1分，又出现食物，等待蛇通过玩家的控制来吃掉，如果蛇头在移动中出界或咬到自己的身体则游戏结束，并且加入了一些附加功能如蛇身加速，选择难度，开关机屏幕画面的优化等一系列功能，使游戏更具可玩性。(NIOS II LED screen Snake design, NiosII based soft-core processor and LED dot matrix display Snake game content is: a snake in a closed fence, the fence was a random food. Players control a snake through 4 keys to move around, and the head of the snake can move along the track movement. Snakeheads hit the food, the food is eaten, the snake grow body section, but remember one point, appeared foods, through the player controls a snake waiting to eat, if snakeheads bite out of bounds or move their bodies in the game end, and added some additional features such as snake acceleration, choose the difficulty to optimize switching machine screen and a series of features that make the game more playable.)

使用C#编写的屏幕截图工具，功能测试均OK，含工程源码，支持快捷键截图，开机自启等

说明：  adc采集数据，将采集的数据存储在sd卡上(ADC collects data and stores the collected data on SD card)

说明：  U-Boot 开发指南 V3.7-20160708，基于ROCKCHIP(U-boot development guide v3.7-20160708, based on rockchip)

本资源是关于生日快乐的一个程序的源代码，是送给好友，女友的最佳的生日礼物。其中对图片的处理采用的是透视化处理，对一些对图片处理比较感兴趣的人来说是相当有用！！ 背景图片在自动交替显示，文字可随意修改，带生日快乐 背景音乐，非常不错