C中_Bool和bool类型的区别? [英] Difference between _Bool and bool types in C?

问题描述

谁能解释一下 C 中 _Bool 和 bool 数据类型的区别是什么?

Can anyone explain me what is the difference between the _Bool and bool data type in C?

例如:

 _Bool x = 1;
  bool y = true;

  printf("%d", x);
  printf("%d", y);

推荐答案

这些数据类型是在 C99 中添加的.由于 bool 在 C99 之前未被保留，因此它们使用 _Bool 关键字(已保留).

These data types were added in C99. Since bool wasn't reserved prior to C99, they use the _Bool keyword (which was reserved).

bool 是 _Bool 的别名.基本上，包括 stdbool.h 标头表明您的代码没有问题，标识符 bool 被保留"，即您的代码不会将它用于其自己的目的(类似于标识符true 和false).

bool is an alias for _Bool if you include stdbool.h. Basically, including the stdbool.h header is an indication that your code is OK with the identifier bool being 'reserved', i.e. that your code won't use it for its own purposes (similarly for the identifiers true and false).

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