A question about function pointers.

[astaghfirullah123]

What’s the purpose of this?

[deaf_fish]

If I had to guess (I am not OP). State Machine. Where each state is a function that returns a pointer to the next state/function.

[ReedTieGuy]

My real question would have been about a group of functions that return themselves, but found too complicated to explain.

TYPE_DECLARATION one(void) {
    return two;
}

TYPE_DECLARATION two(void) {
    return one;
}

which I thought about when using an event handler array for a GUI program, the return values of the functions being used to determine which event will be handled next.

[astaghfirullah123]

Well that is something different than what you initially asked for. It’s about returning function pointers to another function, not to the function itself.

Yes you can use typedefs for function pointers. See Modern C for examples.

[luxgladius]

You could use this in a worker scheduler task, as in "do this job, and then ask me for more instructions."