Introduction to C++ bool Type: Practical Boolean Values and Logical Judgments

The `bool` type in C++ is the core of logical judgment, storing only `true` (true) or `false` (false) and serving as a specialized representation for "yes/no" results. Compared to using `int` with 0/1 in C language, it is more intuitive and secure, avoiding confusion. The use of `bool` relies on logical operators: comparison operators (`==`, `>`, `<`, etc.) return `bool` results, such as `5 > 3` evaluating to `true`; logical operators (`&&`, `||`, `!`) combine conditions, such as `(3>2) && (5<10)` evaluating to `true`. In practical scenarios, it is commonly used for conditional judgment, such as checking if a score is passing (`score >= 60`), controlling the state of a light switch (`lightOn = !lightOn`), or verifying a user's login status. It should be noted that `true`/`false` must be in lowercase, and avoid assigning values using `int` 0/1. Use `==` for comparison instead of the assignment operator `=`. Mastering `bool` can make code logic clearer and support control structures like branches and loops.