目录1. typedef2. #define3. const对比总结在 C 语言中，typedef、#define 和 const 都用于定义常量和简化代码，但它们的用途和工作方式有显著区别。下面详细讲解这三者的特点和用法。
I have a question: Is it possible to select from a MySQL database by comparing one DATE string \"2010-04-29\" against strings that are stor开发者_运维百科ed as DATETIME (2010-04-29 10:00)?
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