What does this expression: void* (*fct)(void*(*)(void*), void*)?

Question

I know that e.g.

void *(*myFuncName)(void*)

is a function pointer that takes and also returns void*.

Is this a pointer which takes 2 arguments? A void pointer another function of that type returning void* and a void*? I'm just guessing..

Answer 1

void* (*fct)(void*(*)(void*), void*);  

declare fct as a pointer to a function that

• returns a void *
• expects its first argument is of type pointer to a function that expects a void * and returns a void * and
• expects its second argument is of type void *.