This is a great IDE for C++ (Windows). Great for academic programs. It comes with a C++ compiler and a slew of popular c++ libraries already for use. Very simple and intuitive to use if you don't want to use Visual C++, Turbo C++, or DJGPP. Check out the screenshot.
http://www.bloodshed.net/images/devcpp5_scr.jpg
http://www.bloodshed.net/devcpp.html
I definitely like this version more than Delorie's DJGPP.
http://www.delorie.com