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    <p>One of my friends is writing a graphics app using <a href="http://www.nvidia.com/object/cuda_home.html" rel="nofollow noreferrer">NVIDIA CUDA</a>. Application fits in very nicely with OOP paradigm and the problem can be decomposed into modules neatly. However, to use CUDA you need to use C, which doesn't support <a href="http://en.wikipedia.org/wiki/Inheritance_(computer_science)" rel="nofollow noreferrer">inheritance</a>. Therefore, you need to be clever.</p> <p>a) You devise a clever system which will emulate inheritance to a certain extent. It can be done!</p> <p>i) You can use a <a href="http://en.wikipedia.org/wiki/Hooking" rel="nofollow noreferrer">hook system</a>, which expects every child C of parent P to have a certain override for function F. You can make children register their overrides, which will be stored and called when required.</p> <p>ii) You can use struct <a href="http://en.wikipedia.org/wiki/Packed" rel="nofollow noreferrer">memory alignment</a> feature to cast children into parents.</p> <p>This can be neat but it's not easy to come up with future-proof, reliable solution. You will spend lots of time designing the system and there is no guarantee that you won't run into problems half-way through the project. Implementing <a href="http://en.wikipedia.org/wiki/Multiple_inheritance" rel="nofollow noreferrer">multiple inheritance</a> is even harder, if not almost impossible.</p> <p>b) You can use consistent naming policy and use <a href="http://en.wikipedia.org/wiki/Divide_and_conquer_algorithm" rel="nofollow noreferrer">divide and conquer</a> approach to create a program. It won't have any inheritance but because your functions are small, easy-to-understand and consistently formatted you don't need it. The amount of code you need to write goes up, it's very hard to stay focused and not succumb to easy solutions (hacks). However, this ninja way of coding is the C way of coding. Staying in balance between low-level freedom and writing good code. Good way to achieve this is to write prototypes using a functional language. For example, <a href="http://www.haskell.org/" rel="nofollow noreferrer">Haskell</a> is extremely good for prototyping algorithms.</p> <p>I tend towards approach b. I wrote a possible solution using approach a, and I will be honest, it felt very unnatural using that code.</p>
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    1. POOOP vs Functional Programming vs Procedural
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    1. COThe first c++ copmpilers were nothing more than pre-processors that generated C code. As such, ALL features of c++ - including multiple inheritance, can be implemented using C. (emulating c++ exception handling in C would require some kind of platform support for exceptions, but c++ implementations require that too, so I dont think it makes the basic idea invalid).
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    2. CO@Chris Becke your answer is too philosophical. For one, C has multiple standards (through the years), barely any of them completely adopted by C compilers let alone c++. To say that C++ is a superset of C because it uses C syntax doesn't mean much because you can't even write code for one C compiler which compiles in another C compiler without significant effort. Furthermore, there are language features (type systems, OOD support) offered in other languages which would be impossible to implement in C without using C to design a new language (which is exactly why there are 'new languages')
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    3. COYou know. I cannot see any more what relevance my comment has to this post at all. :P
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