It will be mostly VC++ (which I'm using), Code::Blocks, then maybe a bit less Eclipse, NetBeans and Xcode.
Though I'm just guessing how popular each of them is here. And I'm not saying these are the only ones, though I can't think of anything else..
Also, see http://www.cplusplus.com/forum/articles/36896/
Also using vim (in a very beginner level). I like the syntax highlight (or, macros, size_t, etc) and its support for various languages.
Besides the possibility of using regex (that sometimes drive me nut, of not knowing if I need to escape the character)
Lots more Visual Studio users here than I thought...
anyway,
I use Vim and the terminal mostly for my scientific stuff, QT Creator for anything that needs a GUI.
Most times I'll design the GUI with QT Creator, then just drop back to Vim to do the rest...don't really like IDEs all that much, QT Creator has a decent FakeVim mode though.
At the moment i'm using Visual Studio 2008, my copy of Visual Studio 2010 professional will be here sometime next week, 'cos shipping always takes 2-3 weeks when its cheapest :P
I also use Qt creator occasionally
and Notepad++ when i'm compiling Qt from command line
On Windows, I use VC++.
On *nix, I use Scite (or Geany or similar) and cmake.
I cannot stand, for the life of me, developing on Windows.... It's really inconvenient.
I'm still relatively new to C++ but I've tried Code::Blocks and VS and all that and I just prefer Notepad++ to be honest. IDEs are a massive pain and any time saved by their intellisense or organising is lost trying to dance around their silly ideas and settings.
There's nothing wrong with compiling from the console, and it will even tell you where you went wrong. You just need to organise your code neatly and be clever.