OOP and Encapsulation

There are many great books and articles on the subject of object-oriented programming or OOP. But I don't think that many of them address the same topic using a non-OOP language such as C! How is that even possible? Are we even able to write object-oriented programs with a programming language that has no support for it? To be precise, is it possible to write an object-oriented program using C?

The short answer to the above question is yes, but before explaining how, we need to explain why. We need to break the question down and see what OOP really means. Why is it possible to write an object-oriented program using a language that has no claim for object-orientation support? This seems like a paradox, but it's not, and our effort in this chapter is to explain why that's possible and how it should be done.

Another question that may puzzle you is that what's the point of having such discussions and knowing about OOP when you...