I have been programming with C++ for a few months now and I am curious if anyone knows of a any sites that offer open source mac programs written in C++. Everything I have found is either for Windows or includes 100+ files and as of right now makes literally no sense to me.
I'm not sure what you mean. A LOT of projects have Mac support and if they don't, they usually have some gentlemen that uses Mac, help contribute a Mac port for the project. Though this isn't always the case. Mac isn't exactly convenient to make a port for and any library or development based project usually will recieve a 5th of the attention it sees on Windows or even Linux.
A lot of the basic C++ programs you see here, should work on your Mac. If not, something is wrong with your setup.
I am a Computer Science major and am in my first year at school. I am not developing exclusively for the mac, all our programs must compile with g++ and use libraries available to Linux, Windows, and Mac. Right now I am just coding without GUIs.. solely console based programs.
You still need XCode. If you're just doing console apps, you should have no problem with most Linux/BSD apps. Understanding how they're packaged is a slightly different matter though.
I tried XCode... It needed waaay too much to run. Projects and what not. editing in textmate and running in terminal by compiling with g++ is so much simpler for me.