Void Recursion

[ciplasplas]

Hi fellas, could somebody answer how can i END a void recursion? I said END, not return to the previous call, I want something similar to "break" in loops but didn't find it in the web :/

[jonnin]

The only way i can think of to do this is to use a thread for the initial call and terminate the thread.

[Repeater]

What's meant to happen after you END the void recursion, given that it doesn't carry on with the calling code?

[cire]

You could throw an exception, although this sounds like you're looking to a solution to a non-problem.

[helios]

Recursion is equivalent to iteration, so unless your recursive function is poorly designed, there's no reason why simply returning to the caller isn't a suitable way of stopping the recursion.

void f(int i){
    if (!i)
        return;
    std::cout << i << std::endl;
    f(i - 1);
}

[Repeater]

Is this question based on the belief that if you return, you have to return something?

Much like this question: https://stackoverflow.com/questions/346613/how-do-you-exit-from-a-void-function-in-c

[Duthomhas]

No, OP wants to do something akin to breaking out of a deeply-nested loop.

It is an incorrect analogy. You cannot avoid passing back up through the call stack (unless you have tail-call recursion, which good C++ compilers will do for you if you design a TCO function).


[edit]
Well, there are a lot of ways to do it, actually, but like cire said, it is a non-problem.
Why do you think this matters?

[Repeater]

Oh, I get it. The OP is asking to jump all the way through the stack back to the last call that wasn't named the same as the current one; all the way back to the first call to the function that is calling itself.

Yes, can't help but think this sounds like solving a problem that shouldn't (or doesn't really) exist.