kline.c 文件是一个mex c文件，编译出来一个接口，通过该接口 得到日行情数据。详情请参见源代码。如何使用这个编译出来的接口文件呢？请查看stock.m文件(The kline.c file is a mex C file that compiles an interface to obtain daily market data through the interface. For details, see source code. How do I use this compiled interface file? Please check the stock.m file)