Knoppix includes KDevelop http://en.wikipedia.org/wiki/KDevelop http://www.kdevelop.org/index.html?f...eenshots2.html
It should be found under the Development menu http://shots.osdir.com/slideshows/167/17.gif
As for compile & run C/C++ code on Knoppix, if you C/C++ code uses any Windows specific MFC or Win32 API calls then it will not run on Knoppix.