Answer Posted / jaroosh

To address the second part of the question - the only way to
implement mechanism like virtual functions in C is by using
function pointers, creating structure emulating Virtual
Pointer Table etc.
Implementation is rather complicated and creates a lot of
overhead for every structure that we want to use with
virtual functions (since ANSI C doesnt support inheritance
and polimorphism, it also calls for emulating this behavior,
so virtual functions for C is actually more of a form of art
than anything usefull).

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