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STM32的IAP升级程序，已经是可以用的，是用SD卡升级的程序，简单好用，有需要的朋友可以直接用(The STM32 IAP upgrade process, it is already possible to use, is to use the SD card upgrade program, easy to use, a friend in need can be directly used)

编写一个函数，要求输入年月日时分秒， 输出该年月日时分秒的下一秒。 如输入2011年12月31日23时59分59秒， 则输出2012年1月1日0时0分0秒。 需要考虑闰年 和 2月的特殊情况 (Write a function that requires input date, hour, minute and second outputs of the date when the next second. If the input at 23:59:59 on December 31st, 2011, output at 0:00:00 on January 1, 2012. Leap year and February need to consider the special case)

改程序主要用来测试VS2008下的dll文件使用(Reform program is mainly used to test the dll file under VS2008 the use of)

VC++ 源码编译实现的计时器小程序，比较简易的计时器，比秒要再快一些，不过这个时间频率是可以调的，如图所示，点击开始计时功能，计时器就开始工作了，可看到数字在不停的增大。(Timer applets VC++ source compiler implementation, relatively simple timer than seconds again faster, but this time frequency can be adjusted, as shown, click the start timing function the timer began working, can be see the numbers kept increasing.)

有的科技图书会附有索引，其中列出书中重要术语出现的页码，便于读者查看。试设计一个类似的程序。输入是一个英文文本文件，输出是文件中关键字及其出现的行号的列表并按照关键字有序排列。程序运行方式：>index inputfile keys outputflie (Some books will be accompanied by technology index, which lists important terms appear in the book pages, easy to readers to view. Try to design a similar procedure. English text input is a file, the output is a file that appears in the keywords and their line numbers list and ordered according to keywords. Program run mode:> index inputfile keys outputflie)

说明：  实用C++计算一篇英文文本的信息熵 1、 读取文档，统计英文字母及空格出现的次数； (将小写字母转为大写字母进行计数) 2、 求概率分布P(X)； 3、 根据定义求信息熵。(Computing the information entropy of an English text with C + + 1. Read the document and count the number of English letters and spaces; (convert lowercase letters to uppercase letters for counting) 2. Calculate the probability distribution P (x); 3. According to the definition of entropy.)

用中点画圆法画椭圆。可以改变大小和位置。(Ellipse midpoint drawcircle.You can change the size and position.)

停车场收费管理程序，本程序是华为软件训练营的任务之一，供大家参考，c语言编写(Parking fees management program, this program is Huawei Software One of the tasks of training camp, for your reference, c language)

用beep蜂鸣器写的婚礼进行曲，循环播放》。(music from beep )

说明：  在设计中,需类与主程序异步传递数据,还不想用消息,因为是c++的程序(In the design, need to class and the main program asynchronous transfer data, also don't want to use the message, because it is a c + + program)