Although I'm sure I'm still light years away from making anything of this caliber, I was curious about if I made a program with the free borland compiler, if I could sell it legally. I'm thinking it's the way for me to go, because it has more functions built in and all. Also a big reason is that according to the FAQ, my best bet for portability is a compiler with a build in function or the curses library, which I'm not even ready to learn about yet (hell, I'm still learning c itself!). For instance, to clear the screen, all the methods that FAQ has are good, but apparently my best bet is like I said, to download a compiler with a built in function for it, instead of a putchar \n loop or one of the other options, like the curses library.
But if I download this compiler now, and get used to using it, it would not be good to find out later that I couldn't sell a product made with it, due to some legal mumbo jumbo
I hope that all came out right, and made sense.