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FIX: ansi add if __STDC__ compile add undef

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rangersly 2025-04-22 16:38:36 +08:00
parent c93071a565
commit c23e61fc23
2 changed files with 4 additions and 0 deletions
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program/c_cpp/universal/ansi.md
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# ANSI转义字符归纳表 # ANSI转义字符归纳表
## 在代码中检测是否支持ANSI C
`#if __STDC__ == 1`
--- ---
## **1. 文本样式控制** ## **1. 文本样式控制**

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program/c_cpp/universal/compile.md
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- [预定义宏](#预定义宏) - [预定义宏](#预定义宏)
- [ifdef](#ifdef) - [ifdef](#ifdef)
- [ifndef](#ifndef) - [ifndef](#ifndef)
- [undef](#undef) : 若要修改一个宏,先移除再定义
- [endif](#endif) - [endif](#endif)
- [pragma](#pragma) - [pragma](#pragma)
- [error](#error) - [error](#error)