well I'm back with more questions in C++....

1. what exactly is a macro in C++?

2. what is an "unsigned" type variable in C++?

3. this one may seem even stupider, but in 3 C++ books I have yet to discover how: how do you store data from one program session for use in a later session?

thnx

btw it would be nice if anyone could give me the address of my previous C++ post, my browser freezes when I start a search......