I just don't get these at all:
I think I'm having a hard time grasping the point in what these are for.
I'm reading this tutorial by beej. Here.
And I don't quite get why I want these functions. Doesn't it already do all of this automatically or something? I'm totally just lost on this. I barely made it past the different variable types like int, long int, and short int, and I still barely understand why those matter. I need why I need these explained to me. D: