Boolean equality operators

The predefined boolean equality operators are: bool operator ==(bool x, bool y); bool operator !=(bool x, bool y);
The result of == is true if both x and y are true or if both x and y are false. Otherwise, the result is false.
The result of != is false if both x and y are true or if both x and y are false. Otherwise, the result is true. When the operands are of type bool, the != operator produces the same result as the ^ operator.