Can I make a function return an array?

[Usul]

Can I make a function return an array?
Sorry for the dum question.


I'm a newbye in programmation, as you can see....
😱

 

[Anarchos]

Yep

 

[Usul]

thx!

 

[Anarchos]

Uh, don't mention it

 

[Usul]

🙂

 

[KarlHungus]

Why not just pass a pointer to the function you're working on?

 

[Usul]

Couse I want to use the function to initialize the array, and haven't been to the pointer part of the Computer Science Class yet 🙂

Yeah, I should get a book....

 

[KarlHungus]

If you are just using the function to initialize the array, have you considered just making a simple array class?

 

[RedRooster]

What language are you using??
If you're using C/C++, you'll have to use a pointer to the array, but if you're using Java you can just pass the array directly, I believe just the name and perhaps [][] based on the dimensions.

 

[Usul]

OK.
I guess it's time to buy a book.
Suggestions?
C++

🙂

 

[Argo]

If you are passing an array to a functin it's automatically passed as a pointer. This means that any changes you make to it will be automatically reflected in the source array.

 

[BFG10K]

Couse I want to use the function to initialize the array, and haven't been to the pointer part of the Computer Science Class yet 🙂

Then why not just make the array global?

 

[Usul]

Wanderful, how?

*just realize i wasted my time in that class last semester*

 

[randomlinh]

usually, global == bad for a beginner class.

and do this:

void fnInitArray(int array[], int size)
{
for (int x = 0; x < size; x++)
array[x] = 0;
}

adjust accordingly. as someone said, array is a pointer, so it will be passed by reference, and any changes in the function will change the array.

edit: heh, the i of course put italics on 🙂 doh.. changed to x

 

[gittyup]

I would agree that this is a good solution....

void fnInitArray(int array[], int size)
{
for (int i = 0; i < size; i ++)
array = 0;
}

I think you added the i , but it didn't show up. Substituting x.

void fnInitArray(int array[], int size)
{
for (int x = 0; x < size; x++)
array[x] = 0;
}

 

[Usul]

Ok, thanks.
Now works 🙂

But seriosly, what is a good book ? Just over &quot;for dummies &quot; lever, but kind of complete..?

 

[IBuySouls]

&quot;Sam's Teach yourself c++ in 24 hours&quot; is decent

 

[BFG10K]

usually, global == bad for a beginner class.

Yes but beginners get their programs up and running faster. At least that's what I've found.
Also if you make global variables most compilers will automatically initialise them for you.

#include <iostream.h>

const int SIZE = 10;//or whatever you want
int array [SIZE];

void init_array()
{
for (int x = 0; x < SIZE; x++)
array [x] = 0;
}

void main()
{
init_array();
}

Piece of cake. Not only that but everything can see your array and there's no need to pass it around and/or return it. For simple programs it saves a lot of time to use global variables.

 

[randomlinh]

yes, but the point is to teach them to program from the start... all i get from professors is &quot;if you use global non-constants, you will fail this course&quot;

 

[Usul]

thanks.

Global variables aren't an issue, they take ~5 sec to go thru all the source code, will never find it 🙂

Thanks to everyone!