Can someone tell me how for loops work?

programming flash
1

Um… I think there is something I’m getting wrong. Theoretically, this should work, but it’s giving me some unexpected results:

var i:int;

for (init(); i < total(); addi())
{
    trace("In loop");
}

function init():void
{
    trace("First");
    i = 0;
}

var _total:int = 10;
function total():int
{
    trace("Second");
    return _total;
}

function addi():void
{
    trace("Third");
    i++;
}

Outputs:

First
Second

There should be a lot more! While changing the code to this works as expected:

for (init(); i < 10; addi())
{
    trace("In loop");
}

//The rest of the code is the same...

Outputs

First
In loop
Third
In loop
Third
...etc

Can anyone tell me what I’m doing wrong and why the for loop is acting in this way?

So, basically, a for loop is a “while” loop. Is there any builtin way (just easier to read instead of using negatives and working around it) to create an “until” loop?

[SIZE=1]EDIT: A funny note, three times in a row (not all at once) these forums yelled at me because all three tags “for”, “while”, and “until” were too common words to use as tags.:hugegrin:[/SIZE]