c++编写，解析指定目录下的.c/.h文件，能够获取c文件的基本元素，如宏定义，头文件包含，函数声明，函数定义，函数调用等，并实现了简单依赖关系查找-c++ write, parse .c/.h files in the specified directory, have access to the basic elements of the c file, such as macro definitions, header file contains function declarations