RAC RAC - 1 year ago 107
C++ Question

Logical XOR operator in C++?

Is there such a thing? It is the first time I encountered a practical need for it, but I don't see one listed in Stroustrup. I intend to write:

// Detect when exactly one of A,B is equal to five.
return (A==5) ^^ (B==5);

But there is no
operator. Can I use the bitwise
here and get the right answer (regardless of machine representation of true and false)? I never mix
, or
, so I hesitate to do that with

I'd be more comfortable writing my own
bool XOR(bool,bool)
function instead.

Answer Source

The != operator serves this purpose for bool values.

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