C语言 #ifdef
时间: 2023-11-23 15:54:19 浏览: 33
在C语言中,#ifdef是一个预处理指令,用于在编译时检查某个宏是否已经被定义。如果该宏已定义,则执行紧随其后的代码块;如果该宏未定义,则跳过该代码块。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* [C语言#if、##ifdef、#ifndef的用法详解](https://blog.csdn.net/Elanie1024/article/details/128831182)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *3* [C 语言:#ifdef 指令](https://blog.csdn.net/wuxiaopengnihao1/article/details/124959925)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]