C99的_Bool数据类型（C）的 [英] _Bool data type of C99 (C)

问题描述

C编程语言的C99标准定义了_Bool数据类型为另一个数据类型的宏（如语言不能够处理一个类型安全的布尔值）。是_Bool为unsigned char型，unsigned int类型或某种其他数据类型的宏？

The C99 standard of the C programming language defines the _Bool data type as a macro for another data type (as the language isn't able to deal with a type safe boolean). Is the _Bool a macro for unsigned char, unsigned int or some other data type?

推荐答案

_Bool 是根据C标准的独立integere类型。 _Bool 是C语言的关键字

_Bool is a separate integere type that according to the C Standard. _Bool is a keyword of the C language.

2目的声明为类型_Bool是大到足以存储值
  0和1

2 An object declared as type _Bool is large enough to store the values 0 and 1.

_Bool 是无符号整数类型。

这是对应的类型_Bool和无符号整型
  标准符号整数类型是标准的无符号整数类型。

The type _Bool and the unsigned integer types that correspond to the standard signed integer types are the standard unsigned integer types.

和那里应该提到的是

- _Bool的等级应低于所有其他标准的等级
  整数类型。

— The rank of _Bool shall be less than the rank of all other standard integer types.

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