I use Dev-C++ from Bloodshed Software.
When I only include stdio.h the programs have about 30k but when I include only iostream.h the programs have 450k!
Currently I have program in work with about 100 lines of code. I inlcude stdio.h, time.h, math.h (need this for sqrt) and algo.h (need this for rand()). The compiled executable has 450k.
Why, the hell, why?!