Cross Platform Programming
Object Oriented Programming languages make developing programs to run on multiple operating systems much easier. All you need is a class library of common functions that has a separate version you can link in for each of the operating systems you want to support where the public interface to the multiple copies of those classes is the same for each platform. It is then a simple matter of linking in the appropriate verion of the library for each operating system.
Tags: cross platform, oop, operating system, operating systems, programming