Quickly change some parameters in your code? If you don´t want to edit your .h-file and then recompile, but rather tweak your parameters in real-time, this is how it´s done.
This code sample shows how to wrap atomic types such that they will still feel like an atomic type. However, because your parameters are inside a wrapper, you may now manipulate all your parameters via this wrapper class. For example, you may store all parameters in a list, save them to a file, remote access them with a browser and so on.