How many bytes does bool type occupy in c++?

In C, the bool type usually occupies 1 byte, but the specific number of bytes depends on the compiler and platform implementation, and may occupy 2 or 4 bytes in special cases.

The number of bytes of bool type in C

The bool type in C is used to represent Boolean values, that is True or false. Its size depends on the compiler and platform implementation.

The bool type occupies 1 byte

on most 32-bit and 64-bit systems

• .

In some special cases

• Specific compilers or platformsmay implement the bool type as occupying 2 or 4 bytes.
• The bool type used in bit fields may take up fewer bytes.

Example

<code class="cpp">#include <iostream>

int main() {
    // 创建一个 bool 变量
    bool isTrue = true;

    // 输出其占用的字节数
    std::cout << "字节数: " << sizeof(isTrue) << std::endl;

    return 0;
}</code>

Output

<code>字节数: 1</code>

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