boolean in C#

The bool type keyword is an alias for the .NET System Boolean structure type that represents a Boolean value, which can be either true or false . To perform logical operations with values of the bool type, use Boolean logical operators. The bool type is the result type of comparison and equality operators.
```
bool b = true;
Console.WriteLine(b ? "Checked" : "Not checked");  // output: Checked
Console.WriteLine(false ? "Checked" : "Not checked");  // output: Not checked
```