Hi, I'm just starting out with programming in C++, and would like some clarification on something..

What is the meaning of the '&' in this line:

void Stack::push(const StackElement & value);

I would assume that it takes a reference as a parameter, however, why is it that it works when I pass a constant or a regular variable into it, like say, push(1), or push(x)?

Thanks,

kreb