Thread: Problems passing values from function to main variables

Originally Posted by ERJuanca

Thank you for the quick reply, I will try some changes.
Would you suggest me to use a global variable to assign the resulting array from function?

No, you can return a pointer to an array.


@the world: I was *wrong*.

Returning the pointer to an array is quite involved (when the array is 2D, you need a loop and stuff). I still think it's a better idea to pass the original array to be filled in, into the function. (This may be allocated dynamically if required).

--
Mats

Originally Posted by tabstop

@op: Just pass in the array you want changed and change it inside the function.

That would be the "quick, easy and generally best" way.

Originally Posted by MK27

That would be the "quick and easy" way.

And for most cases, the CORRECT solution.

It is far too often on this forum that people suggest dynamic allocation as a solution. It is REALLY not the right thing.

--
Mats

Originally Posted by matsp

And for most cases, the CORRECT solution.

That's why it also says "and generally best"...are you trying to misquote me?

This reminds me of a story I heard once about three gunslingers in a darkened closet...maybe it was two gunslingers and a grizzly bear*.

* I think the punchline was "WHAT HAPPENED TO THE NEW G'DAM CAT?"

Originally Posted by tabstop

@MK: I know the OP is not returning an array, because arrays are not returnable. The OP quite clearly wants to return an array, as is stated.

I do not think the OP does want that. I think "pass the resulting array" is a typo. The rest of the context pretty much implies we want a single float value. I am right*!

Originally Posted by ERJuanca

Code:

return dog[i][j]; //will this work? or should I use some other syntaxis?

*it is because i & j are now out of bounds.

ps. "syntaxis" beat's brewbuck's "happenstance" for my word o' the day...