Differences between large and small bool

Someone asked me this question two days ago. I have never paid attention to it before (they all use big bool directly). I learned it online and figured out the problem. Pai_^
Differences between large and small bool:
1. Different Types
Bool is int type
Bool is Boolean
2. Different Lengths
Bool has only one byte
The bool length depends on the actual environment. Generally, it can be regarded as 4 bytes.
3. Different values
Bool values: false and true, which are the difference between 0 and 1.
Bool values: false and true, which are the difference between 0 and non-0.
4. Example
Bool x = 3; // alarm
Bool x = 1; // correct
Bool x = 3; // correct
Bool x = 3.3; // alert