473,787 Members | 2,971 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

declaring a function that returns a pointer to 1-d array

How can I declare a function that returns a pointer
to one dimensional array ?

Nov 15 '05 #1
12 1762
ju**********@ya hoo.co.in wrote on 17/09/05 :
How can I declare a function that returns a pointer
to one dimensional array ?


Do your best effort nd post it. It's basic.

(hint : malloc())

--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html

..sig under repair
Nov 15 '05 #2
(supersedes <mn************ ***********@YOU RBRAnoos.fr>)

ju**********@ya hoo.co.in wrote on 17/09/05 :
How can I declare a function that returns a pointer
to one dimensional array ?


Do your best effort and post it. It's basic.

(hint : malloc())
--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html

"Mal nommer les choses c'est ajouter du malheur au
monde." -- Albert Camus.
Nov 15 '05 #3
ju**********@ya hoo.co.in wrote:
How can I declare a function that returns a pointer
to one dimensional array ?

Like you declare any other funtion, just remember that the scope of
local variables are restricted to within the function. So you have to
return a pointer to dynamically allocated memory, or to a static variable.

cheers,
forayer

--
If you would be a real seeker after truth, it is necessary that at least
once in your life you doubt, as far as possible, all things."
-- Rene Descartes
Nov 15 '05 #4
ju**********@ya hoo.co.in writes:
How can I declare a function that returns a pointer
to one dimensional array ?


Do you really want a pointer to an array, or do you want a pointer to
its first element (which you can then use to access all the elements)?

--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
Nov 15 '05 #5

Keith Thompson wrote:
ju**********@ya hoo.co.in writes:
How can I declare a function that returns a pointer
to one dimensional array ?


Do you really want a pointer to an array, or do you want a pointer to
its first element (which you can then use to access all the elements)?

I want a pointer to an array. (not the pointer to the first element).

Nov 15 '05 #6
ju**********@ya hoo.co.in wrote:

Keith Thompson wrote:
ju**********@ya hoo.co.in writes:
How can I declare a function that returns a pointer
to one dimensional array ?


Do you really want a pointer to an array,
or do you want a pointer to
its first element
(which you can then use to access all the elements)?

I want a pointer to an array. (not the pointer to the first element).


/* BEGIN new.c */

#include <stdio.h>

int (*f(void))[11];

int main(void)
{
printf("f()[0][2] is %d.\n", f()[0][2]);
putchar('\n');
return 0;
}

int (*f(void))[11]
{
static int a[11] = {1, 3, 5, 7};

return &a;
}

/* END new.c */
--
pete
Nov 15 '05 #7
pete wrote on 17/09/05 :
int (*f(void))[11];


Scary !

--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html

"C is a sharp tool"
Nov 15 '05 #8
ju**********@ya hoo.co.in writes:
Keith Thompson wrote:
ju**********@ya hoo.co.in writes:
> How can I declare a function that returns a pointer
> to one dimensional array ?


Do you really want a pointer to an array, or do you want a pointer to
its first element (which you can then use to access all the elements)?

I want a pointer to an array. (not the pointer to the first element).


Ok. Why?

--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
Nov 15 '05 #9

pete wrote:
ju**********@ya hoo.co.in wrote:

Keith Thompson wrote:
ju**********@ya hoo.co.in writes:
> How can I declare a function that returns a pointer
> to one dimensional array ?

Do you really want a pointer to an array,
or do you want a pointer to
its first element
(which you can then use to access all the elements)?

I want a pointer to an array. (not the pointer to the first element).


/* BEGIN new.c */

#include <stdio.h>

int (*f(void))[11];

int main(void)
{
printf("f()[0][2] is %d.\n", f()[0][2]);
putchar('\n');
return 0;
}

int (*f(void))[11]
{
static int a[11] = {1, 3, 5, 7};

return &a;
}

/* END new.c */


Thanx a lot ...

Nov 15 '05 #10

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

58
10181
by: jr | last post by:
Sorry for this very dumb question, but I've clearly got a long way to go! Can someone please help me pass an array into a function. Here's a starting point. void TheMainFunc() { // Body of code... TCHAR myArray; DoStuff(myArray);
2
2106
by: Chris Haynes | last post by:
Hello all, I have a structure: typedef struct UVstruct { float u, v; } uv; Inside a function (A) i declare a pointer to an instance of this structure:
8
29068
by: Tweaxor | last post by:
Hey, I was trying to figure out was it possible in C to pass the values in an array from one function to another function. Is the possible in C? ex. y is the array that holds seven values If possible how could one pass these seven values in the array to a function that would check the values. I tried return y but it didn't work
9
2198
by: shaun | last post by:
Dear all, I realized an error in a previous post, I reproduce it here because I'm still not sure how to solve it: I want to make a templated function which points to one-past-the-end of a simple array, to pass to a range constructor for a const vector. Here is some demonstration code: #include <iostream> using namespace std;
17
3265
by: I.M. !Knuth | last post by:
Hi. I'm more-or-less a C newbie. I thought I had pointers under control until I started goofing around with this: ================================================================================ /* A function that returns a pointer-of-arrays to the calling function. */ #include <stdio.h> int *pfunc(void);
12
3888
by: gcary | last post by:
I am having trouble figuring out how to declare a pointer to an array of structures and initializing the pointer with a value. I've looked at older posts in this group, and tried a solution that looked sensible, but it didn't work right. Here is a simple example of what I'm trying to accomplish: // I have a hardware peripheral that I'm trying to access // that has two ports. Each port has 10 sequential // registers. Create a...
8
2935
by: =?Utf-8?B?UHVjY2E=?= | last post by:
Hi, I'm using vs2005, .net 2, C# for Windows application. I use DllImport so I can call up a function written in C++ as unmanaged code and compiled as a dll us vs2005. My application is able to call the function, EncodeAsnUser. And it's returning OK but when I display the decoded data in another part of my application it shows no data has been decoded, all fiedls are either null or blanks. For some reason, I am not able to step through...
5
2028
by: shanfeng | last post by:
such as a function: f(double v, int a) could this function return both a integer and array? Thank you very much. I have confused on this for a long time~
1
1401
by: Josuan | last post by:
It seems that a variable can be declared with parenthesis. For example: int main() { int (x); x = 5; } In this case it is useless. But is there any circumstances where parenthesis are really needed ? if not why allow this ?
0
9497
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10363
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10169
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
10110
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
8993
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
6749
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5398
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
5534
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
4067
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.