Code that return True if only one or two of three params are true

Question

I need a code that return True if only one or two of three params are true

what is the shortest/best way?

Answer 1

I'm addicted to this question!

bool MyFourthAnswer(bool a, bool b, bool c)
{
   return (a != b) || (b != c);
}

Answer 2

Just check whether at least one of the values is set and not all three values are set:

bool result = (a | b | c) & !(a & b & c);