Well, unless you're not using gcc on there, but a different C compiler, your information is incorrect.
Linux is the kernel, built on top of that is what we call the distribution. Ubuntu is a distribution, Slackware, Gentoo etc. are all distributions. (Distribution because they're a collection of programs, packages and scripts distributed with the kernel)
They have different ways on installing gcc. That being said, you'll be far, far, far better off asking your admin where the C compiler is.