negative number raised to even power

[Wes Loewer]

(05-05-2015 05:17 AM)debrouxl Wrote:  In C/C++, ^ is exclusive or (xor). In C (but not in C++), from C99 onwards, when using the alternative spellings iso646.h header, xor is expanded to ^.

(just for clarification)
But in Standard C++, there's no need to include the header as xor is already a C++ keyword.