的C类型的命名约定，_t或ALLCAPS [英] C type naming conventions, _t or ALLCAPS

问题描述

我一直在想，如果有任何命名convetions当使用ALLCAPS的类型和时追加 _t （当不使用什么吗？）。我知道，在天回K＆安培; R发表的各种关于如何用C文件，但我找不到这事

I've always wondered if there are any naming convetions as when to use ALLCAPS for a type and when to append _t (and when to not use anything?). I know back in the days K&R published all kinds of documents about how to use C, but I couldn't find anything about this.

在C标准库类型， _t 显得prettys是占主导地位

Among the C standard library types, _t seem prettys dominant

time_t
clock_t
uint32_t
size_t
sig_atomic_t
...

，而不是文件，的va_list 或结构TM 。是否有实际的规则来这还是完全任意？微软一直使用的ALLCAPS typenames在他们的Windows API，其中至少似乎比C库，坦率地说...

, as opposed to FILE, va_list or struct tm. Are there actually rules to this or is it completely arbitrary? Microsoft always uses typenames in ALLCAPS in their Windows API, which at least seems more consistent than the C library, frankly...

推荐答案

其实根据POSIX标准，_T结尾的所有类型名称被保留，所定义的这里：

Actually according to the POSIX standard, all type names ending in _t are reserved, as defined here:

这与'_t'被保留额外的类型名称结尾的名称。

Names that end with ‘_t’ are reserved for additional type names.

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