Question

Suppose I have a variable, that stores the callback.

void* (*function)(int, double);

Now I would like to create a function, that will return this callback. I do not want the user to access the callback directly but by a function. This doesn’t work:

void* (*)(int, double) getCallback();

My question is: What will the prototype for such function look like?

Answer 1

typedef the callback type:

typedef void* (*pf)(int, double);

pf getCallback();

This will also make sure that there are no mistakes from manually typing the wrong signature and such.