How to make a function and call it?

**AmbliKai** · 11-14-2007

Hi there everyone, still teaching myself c and would like to ask a question.

In my program i'm writing, i use a piece of code an awful lot, namely this construction:

Code:

for (x = 0; x < 9; x++)
{
	for (y = 0; y < 9; y++)
	{
		for (z = 0; z < 9; z++)
		{
		//Some code here
		}
	}
}

Is it possible to put this into a function that i can call?

For example:

Code:

setupcoordinates( Some Code Here );

I've no idea how i can go about this but would like to know as it would shorten my program by a lot of lines!!!

Thanks everyone for your time.

**matsp** · 11-14-2007

Let me see if I first got your question right:
You have several places where you have three nested loops [three loops, one inside the other]. In the center of that, you do something.

Now, that's fairly clear. What I'm not so sure about is what you actually want to do: Do you want to have one funciton that does the loops and then does different things "in the middle"?

Is this what you want?

It can be done - you could pass a function pointer to such a function, which takes 3 or more parameters (x, y and z). The parameters need to always be the same type and order - but you could of course pass into the outer function some variables that are used by the inner function.

Does that help you, or are you even more lost now? If so, you probably need to study "function pointers".

--
Mats

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