#define maxHeight 20 #define maxWidth 10 #define gridlen 20

根据提供的代码，#define maxHeight 20的作用是定义一个名为maxHeight的宏，其值为20。这意味着在代码中使用maxHeight时，编译器会将其替换为20。同样地，#define maxWidth 10定义了名为maxWidth的宏，其值为10。最后，#define gridlen 20定义了名为gridlen的宏，其值也为20。这些宏的作用是为了方便在代码中使用这些常量值，以增强代码的可读性和可维护性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [M5ATOMS3基础01按键](https://blog.csdn.net/ZhangRelay/article/details/131923774)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* [C语言课程设计贪吃蛇](https://download.csdn.net/download/qq_21213073/9675751)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]