C++ beginner's coding mistake: “Undeclared identifier”?

Question

I\'m to use C++ for a very small part of my project. I must be coding something wrong, but my knowledge of C++ is what it is and I can\'t get around this...

See both the

Answer 1

void AbstractContactListener::isFixtureCollidingWithFixtureOfType(b2Fixture fix, int type)

In the implementation.

:)