How can I emulate constructor and destructor behavior (for particular data types) in C

I have a C (nested) structure that I would like to automagically initialize and destroy in my code.

I am compiling with GCC (4.4.3) on Linux. I am vaguely aware of GCC function attributes constructor and destructor, but the construction/destruction they provide seem to relate to the entire program (i.e. before main() is called etc).

I want to be able to have different init/cleanup funcs for different data types - is this C++ like behaviour something that I can emulate using POC?

I have included the C++ tag because this is really C++ behaviour I am trying to emulate in C.