xor

[c94wjpn]

:D Hi folks. is there an XOR binary (bool,bool) operator in C++ please?

[Graham]

Presumably you mean logical XOR as opposed to bitwise XOR (the ^ operator).

No. Use:

(a || b) && !(a && b)

[Pete Bourner]

A better way to do this is :
( a != b ).
This will obviously only be true if one of a and b is TRUE and the other is FALSE.

If you wanted to, you could even define XOR to be !=, as in the following:

#define XOR !=

int main(int argc, char* argv[])
{
bool a = ( false XOR false );
bool b = ( false XOR true );
bool c = ( true XOR false );
bool d = ( true XOR true );

return 0;
}

This approach makes the intention of the code just as clear as an inbuilt xor operator would.

[c94wjpn]

ok thanks