The "Real Turbo C" was made by Borland probably 20 years ago. One can get (legal) copy from their current owners, Embarcaderro.http://edn.embarcadero.com/article/20841
However, I doubt it (or anything of that vintage, 16-bit) will run on 64-bit Windows. There are plenty of free C and C++ compilers, @dextermat pointed to some resource. If you are just starting with programming - get something you can work with on, don't look twenty years back. Get Microsoft Visual Studio Express, for example.