What is bool in c language

The bool type in C language is used to represent Boolean values, that is, true or false, and the header file <stdbool.h> needs to be included. Bool variables can be assigned true or false and can be compared using operators such as == and !=. C language also provides Boolean operators such as &&, ||, !, etc. for combining bool values.

bool in C language

What is bool?

bool is a built-in data type in C language used to represent Boolean values ​​(true or false).

How to use bool?

When using bool, you must first include the header file <stdbool.h>.

bool variables can be defined in the following ways:

bool is_true; // 声明一个名为 is_true 的 bool 变量

Assignment and comparison of bool values

bool values ​​can be assigned to true or false:

is_true = true; // 将 is_true 设为 true

bool values ​​can be compared using the following operators:

• ==: equals
• !=: does not Equal to

Boolean operations

The C language provides Boolean operators for combining bool values:

• &&: Logical AND
• ||: Logical OR
• !: Logical NOT

Example

#include <stdbool.h>

int main() {
  bool is_daytime = true;
  bool is_raining = false;

  bool is_umbrella_needed = is_raining || !is_daytime; // 如果正在下雨或不是白天，则需要雨伞

  return 0;
}

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