Can you point me to a reference of design patterns in Standard C (C89 or C99)? (Not C#, not C++.)
G'day,
Take a look at Axel-Tobias Schreiner's ebook Object-Oriented Programming with ANSI-C. You'll have to handroll some aspects of some patterns but you'll be able to implement many of the simpler GoF ones.
HTH
cheers,
Design patterns should be language agnostic - unfortunately most of them assume an object oriented environment.
http://stackoverflow.com/questions/674722/struggling-with-c-coming-from-object-oriented-land
Following from Nick's answer, I suggest that you learn how to implement cplusplus-like things using C (e.g., a C struct with a pointer to a table of function pointers, emulates a C++ class with virtual functions), which means understanding how C++ is implemented by the compiler. Once you've done this then you'll be able to read design patterns for C++ and implement them using C.