如何更改枚举（C ++）使用的整数类型？ [英] How to change the integer type used by an enum (C++)?

问题描述

如果我有C ++枚举：

If I have an C++ enum:

enum Foo
{
  Bar,
  Baz,
  Bork,
};

如何告诉编译器使用 uint16_t 实际存储枚举的值吗？

How do I tell the compiler to use a uint16_t to actually store the value of the enum?

编辑：GCC在C ++ 11的实现中是否支持此功能？

Does GCC support this feature in its implementation of C++11?

推荐答案

您不能在C ++ 98/03中执行此操作。 C ++ 11确实允许您这样做，并且没有 枚举类，其他人似乎总是告诉您：

You cannot do this in C++98/03. C++11 does allow you to do it, and without enum class the way everyone else seems to keep telling you:

enum EnumType : uint16_t
{
  Bar,
  Baz,
  Bork,
};

同样，您不必使用枚举类。并不是说这是一个坏主意，但是您不必。

Again, you don't have to use enum class. Not that it's a bad idea, but you don't have to.

GCC在C ++ 11的实现中是否支持此功能？

Does GCC support this feature in its implementation of C++11?

哪个版本的GCC？看起来GCC 4.4添加了此功能，但您可能应该使用较新的版本，仅用于为了稳定。

Which version of GCC? It looks like GCC 4.4 added this functionality, but you should probably look to more recent versions, just for the sake of stability.

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