What does bool mean in C language?

The bool type in C language is a Boolean type used to represent true or false values. It only contains two possible values: true and false. It is mainly used for conditional statements, relational operators and logical operators. , occupies one byte of memory space, and has only two possible values: 0 (representing false) and 1 (representing true).

The bool type in C language

What is the bool type?

In C language, the bool type is a Boolean type that represents a true or false value. It contains only two possible predefined constants: true and false.

Usage

The bool type is used to store and compare logical values. It is mainly used in the following scenarios:

• Conditional statements: Conditional statements such as if, else, while, and for require Boolean expressions to determine whether to execute a block of code.
• Relational operators: Relational operators such as ==, !=, >, <, >= and <= return bool values, indicating the relationship between two expressions .
• Logical operators: Logical operators such as &&, || and ! perform Boolean operations on bool values.

Size and range

The bool type is a single-bit data type that usually occupies one byte of memory space. It has only two possible values: 0 (for false) and 1 (for true).

Usage Example

#include  // 需包含此头文件以使用 bool 类型

bool is_true = true;
bool is_false = false;

if (is_true) {
  // 执行代码块
}

if (a > b) {
  // 执行代码块，因为 a > b 返回 true
}
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