返回枚举值的数量。（枚举 typedef 的大小）

发布于 2024-09-14 00:17:59 字数 240 浏览 2 评论 0原文

是否有内置函数或方法来查询 emun typedef 的大小？

typedef enum difficultyTypes {
kEasy,
kMedium,
kHard
} difficultyType;

我想要一种查询并让它（在本例中）返回 3 的方法。我什至可以处理它返回 2 作为最高值（ 0,1,2 ）。

或者我是否被迫使用在创建枚举时静态设置的另一个 int 变量？

原文

Is there a built in function or a way to query the size of an emun typedef?

typedef enum difficultyTypes {
kEasy,
kMedium,
kHard
} difficultyType;

I would like a way to query and have it ( in this case ) return 3.
I could even deal with it returning 2 as the highest value ( 0,1,2 ).

Or am I forced to use another int variable that I statically set when I create the enum?

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厌味 2024-09-21 00:17:59

您可能需要参考这篇文章。

To clarify his answer, looking at your example you could do the following

typedef enum difficultyTypes {
kEasy,
kMedium,
kHard,
kCount
} difficultyType;

kEasy 为 0，kMedium 为 1，kHard 为 2，kCount 为 3，即元素数量减去其自身。

You may want to reference this post.

To clarify his answer, looking at your example you could do the following

typedef enum difficultyTypes {
kEasy,
kMedium,
kHard,
kCount
} difficultyType;

kEasy would be 0, kMedium is 1, kHard is 2, and kCount is 3, which is the number of elements you have minus itself.

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