如何实现单片机C语言的模块化编程,详细讲解C语言的模块化编程的方法与技能，注意事项。详细讲解C语言的模块化编程的相关宏定义写法，规则等！(How to realize the modular programming of C language of single chip microcomputer, and explain the methods and skills of modular programming of C language in detail, as well as the precautions. Detailed explanation of C language modular programming related macro definition writing, rules and so on!)