Well there are many compilers available like Borland c++ , visual basic etc. and others but the are for advanced users who want to create GUI(graphical user interference) applications like windows.

Turbo c++ version 3.0 is a free compiler which you can download from here  You can also get many other things form that site.

STEP 1- DOWNLOADING TURBO C++ COMPILER

STEP2-INSTALLING TURBO C COMPILER

STEP3 RUNNING THE COMPILER