I too am learning to "C"!! If you do not have access to a comercial box with CC, or to a Linux box that has GCC, then you can download a compiler that runs on DOS. Here is a description:
DJGPP is a complete 32-bit C/C++ development system for Intel 80386 (and higher) PCs running DOS. It includes ports of many GNU development utilities. The development tools require a 80386 or newer computer to run, as do the programs they produce. In most cases, the programs it produces can be sold commercially without license or royalties.
and a
-->link<-- to get the software. Its really easy to setup, couldnt get any easier! Enjoy, and happy programming