Supporting Multiple Platforms in C++
There will come a time in your game development career when you have to write code which will only work on a single platform. That code will have to be compiled out of other platforms. You will more than likely also have to find alternative implementations for each of the platforms you will be working on. Classic examples of such code can usually be found in interactions between your game and online login and microtransaction solutions such as Game Center, Google+, Xbox Live, PlayStation Network and Steam.