初步实现写日志功能，使用makefile生成可指向文件demo



输入命令./demo在根目录生成日志文件



此程序提供个人编写日志模块的思路，仅供初学者参考。-Initially write the log function, can point to files using the makefile generator demo enter the command./Demo personal the idea to write the log module generates a log file in the root directory of this program, only for beginners reference.