stm32+esp8266wifi调试例程，实现sta+ap模式

求字符串长度，c++教学程序，可供学生初步学习c++使用。(get the lenght of string)

基于DES和RSA的加密聊天工具，共包含4个文件: chat.cpp、des.h、rsa.h、makefile。 编译：命令行模式下，切换到代码所在目录，输入make后回车即可。 运行：命令行模式下输入 ./chat，然后选择程序执行角色（客户端或服务器），如选择服务器，则程序自动打开端口开始监听；如选择客户端，则需要输入服务器地址。最后输入命令quit退出程序。 此外，代码中实现了异步，select以及普通三种IO模型，需要通过定义宏控制。(DES and RSA encryption based chat tool contains four files: chat.cpp, des.h, rsa.h, makefile. Compile: command line mode, switch to the code directory, enter make press Enter. Run: Command line mode input/chat, and then select the program to perform the role (client or server), such as selecting a server, the program automatically opens the port to start listening If you choose a client, you need to enter the server address. Finally, enter the quit command to exit the program. In addition, the code is implemented asynchronously, select and general three kinds of IO model, you need by defining the macro control.)

16位瑞萨单片机RL78G13 SPI程序 现在网上瑞萨资料基本没有(16 Renesas MCU RL78G13 SPI program online now basically no Renesas data)

学习C语言数组章节时，通过实验加深理解，通过处理不同的问题，来理解数组的用法。(When learning the chapters of Array in C language, we can deepen our understanding through experiments, and understand the usage of Array by dealing with different problems.)

说明：  这是核学习的一个基础软件包，里面有很多核学习所需要的函数，使用起来十分方便。(nuclear This is a learning based packages, there are many nuclear learning in function, it is very convenient to use.)

简单实用的ASP在线考试程序，可以用于企事业单位的培训考核，班级学生小测验等。(Very easy to use ASP online testing program, can be used for the training and examination of the enterprises and institutions, students in class quiz)

这是21寸定位压合源代码(it s very inportent)

螺旋轨迹重建的一种实现方法，是解析算法的典型案例(An implementation method of spiral trajectory reconstruction is an analytical algorithm)

图像处理程序检测到人类。

使用OpenGL导入txt文件构造的一个简单的世界，控制一个镜头漫游一个仓库，仓库中有一些箱子等(Import txt file using the OpenGL constructed a simple world, the control of a camera roam a warehouse, storage boxes, etc. There are some)