常用接受的变量名格式 - C / C ++ [英] Commonly Accepted Variable Name Formatting - C/C++

问题描述

我意识到这可以是一个偏好的问题，但我注意到，在很多代码示例中我看到的变量名称有一个前缀 g _ s _ ， m _ ，或只是 _ 。这是一个普遍接受的做法，这些前缀是什么意思？是否还有其他人会很好知道？

解决方案

• g_ 是一个全局变量


• m _ 是成员（实例变量）


• _




这是很常见的，许多开发人员都知道它，虽然它不是（据我所知）普遍接受。





更新：请在下面整合评论，以提高曝光率






• _ 也可用于表示局部变量（这个变量实际上不是标准）


• k 可用于表示常数





I realize that this can be a matter of preference, but I have noticed that variables names in a lot of code samples I've seen have a prefix of g_, s_, m_, or just _. Is this a commonly accepted practice, and what do these prefixes mean? Are there any others that would be good to know?

解决方案

• g_ is a global variable
• s_ is a static
• m_ is a member (an instance variable)
• _ is either a member, or more specifically a private member (both usages turn up)

This is common enough that many developers know about it, although it is not (to my knowledge) universally accepted. I don't think you are missing any others.

Update: Integrating comments below for better visibility

• _ can also be used to denote a local variable (this one really isn't "standard")
• k can be used to denote a constant

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