I have an assignment in which I need to rite an OpenGL program that displays a green square on a black background. Does anyone know a good free software I can download to run this. I'm mostly familiar with java, and since this is in C, I don't know where to start. Help would be appreciated

If you're looking for tutorials on OpenGL, this is a good one.

I have Eclipse to run it. But when I tried to run it, it keeps saying "Launch Failed. Binary Not Found." I'm not really sure what to do or what I need to download.

Have you downloaded the binaries? Check this out.