Programming :: Can Predefine Constant Array In C?

Aug 1, 2010

Can I predefine constant array in c? with constants i do #define NAMEOFCONST value.is it possible to do this for an array? And if not I would like to know why. I suspect it has to do with memory handeling and pointers.

View 14 Replies


ADVERTISEMENT

Programming :: C Realloc Resize Array / Delete And Add Information Into The Array?

Mar 6, 2011

I am trying to dynamically delete and add information into the array "blah"

Code:
int blahsize = 1;
char** blah = (char**) calloc(blahsize+1,sizeof(char*));
Adding information:
Code:
blah[1]=stuff1;
blah[2]=stuff2;
code....

View 2 Replies View Related

Programming :: Convert Short Array To Char Array?

Jun 7, 2010

I have trouble converting a short array to a char array

Code:

short pShort[4] = { 0x41, 0x42, 0x43, 0x44 };

How to convert this to a char array?

View 4 Replies View Related

Programming :: Converting A PHP Array Into An HTML Array?

Aug 9, 2009

I'm writing a PHP program. I've encountered a problem; in the following code I try to pass $_POST['delete'] which is an array as the value of a hidden input to some form, but it doesn't do so.there's something wrong with converting PHP array into HTML array. I'm sure that $_POST['delete'] is not null and is a real array.

echo '<input type="hidden" name="delete[]" value="'.$_POST['delete'].'" />';

View 4 Replies View Related

Programming :: Filling 2D Array With 1D Array In C?

May 26, 2010

(I am using vector() and matrix() functions from "Numerical recipes in C".)There are 100 numbers to be stored in 2D array of 10 rows and 10 columns.100 numbers are stored in a 1D array.I get "segmentation fault" at the line indicated in the segment of my code below:

Code:

:
:
#define size 100
#define nl 1

[code]....

View 12 Replies View Related

Programming :: POSIX__Philosophers At Dinner: Error: Initializer Element Is Not Constant

Jun 23, 2010

I changed my post because I found that solution, and didn't want to bother for that. But, since I didnt find a way to delete the post, I thought of updating it: I am beginning to write the code for the philosophers problem. As you know, they can eat, think or wait for forks. When they have 2 forks, one by each side, they eat. Then they set the 2 forks as available, and think.

Each philosopher is a thread. My problem is that it gives segmentation fault, somehow, when I try to initialize. The thing I really don't understand, is why it sometimes gives segmentation fault on initialization #0!!! (But generally on initialization #1) I have set 5 initializations in total, defined by N, that is also the number of threads I'm working on.

PHP Code: #include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<pthread.h>
#include<errno.h>
#include <time.h>
#define N 5
[Code]....

View 1 Replies View Related

Programming :: Warning: Deprecated Conversion From String Constant To Char*

Jul 3, 2010

I've just updated my linux system (Debian) and went to compile some code I'm working on. However it causes some problems, presumable because of GCC up dates. I get many of my subject line errors for example

../../common/Version_Control.cpp: In function int VersionControl():
../../common/Version_Control.cpp:55: warning: deprecated conversion from string constant to char*

So I check up the error and it comes from my error handler code which is a function

extern void SetError(char *string,int error_number)

The net tells me all I need to do is convert char *string to const char *string, however when I do so and recompile I get the following error

Error_Control.cpp: In function �void SetError(const char*, int)�:
Error_Control.cpp:41: error: invalid conversion from �const char*� to �char*�
make: *** [Error_Control.o] Error 1

I think I've done exactly what's recommended ?

View 3 Replies View Related

Programming :: G++ Warning - Deprecated Conversion From String Constant To 'char*'

Jan 10, 2011

My problem is that the warning keeps apperaing when I run g++ compilation.

Say, I have a system runtime function with header (imaginary)sysruntime.h: void printfunction(char *line);

Then in my .cpp file, I will include the above header #include <sysruntime.h>

Then, I do the below:
Line12: char *linetoprint = "Print this line";
Line13: printfunction(linetoprint);

But, I will get the warning message "Line12: deprecated conversion from string constant to 'char*'". (Even though it compiles)

My question is how should I declare my char* so that I wont get this warning message, and can still run printfunction(char* line) correctly?

View 7 Replies View Related

Programming :: Bash Array Add Function Example Using Indirect Array Reference As Function Argument?

Jun 20, 2010

I looked on the net for such function or example and didin't find anything, thus after having made one i guess it would be legitimate to drop it to see what others thinks of it.

#!/bin/bash
addelementtoarray()
{
local arrayname=$1

[code]....

View 10 Replies View Related

Programming :: Arrays In The C Programming Language Are Pointers To The First Element Of The Array?

Mar 27, 2010

I wonder why arrays in the C programming language are pointers to the first element of the array, not the first element of the array itself?

View 14 Replies View Related

Programming :: Array Containing Words In C?

Sep 24, 2010

This array is supposed to contain 12 elements (names of the month) What I want to achieve is that depending on some user input (a number 1-12) a full name of one of the months will be displayed, eg.

Code:
scanf("%d", &month);
printf("The month is %c", months_names[month]);

View 6 Replies View Related

Programming :: How To Do An Array Of Characters

Feb 18, 2010

I am trying to create an array containing all ASCII characters, how do I create one:

Code:
#!/bin/bash
CHARLIST=( a b c d e f g h i j k l m n o p q r s t u v w x y z

[code]...

View 6 Replies View Related

Programming :: Getting String Value From Array?

Oct 29, 2009

I've got a problem...

a[0] = 22
echo $[a[0]]
echoes 22 - that works fine

[code]...

View 5 Replies View Related

Programming :: Array Creation At Run-time In C++?

Apr 4, 2010

I have a text file from which i read a number of names with their lengths at the run-time.Now i want to created a char array having the length and name as already read from the text file at the run-time. There is no compilation involved. Every thing is happening at the run-time. I tried using STL like map along with malloc but i am unable to name an array at run-time. I can keep some type of mapping with previously created arrays

View 3 Replies View Related

Programming :: Convert String To Int Array?

May 9, 2010

I've searched around and can't find out how to convert a string ( like "12345" ) into an int array ( x[ 5 ] = { 1, 2, 3, 4, 5 } ; ).

View 4 Replies View Related

Programming :: Represent Alphabet Into A Array?

Jul 9, 2010

i am trying to represent alphabet into a array, and then i can count the frequency

for example
array[a]=0
array[b]=0

but i find the index of the array seems to be

array[1]=0
array[2]=0

I was try this way get the ascii for them, actually I have done this in java and it is simple.

something like this format
array[ascii{a}-ascii{a}]=0
array[ascii{b}-ascii{a}]=0

I have done a lot of searching , but cannot get what I want.'%d' "'$char" like this would not work.

View 2 Replies View Related

Programming :: Sorting 2 Dimension Array?

Aug 5, 2010

how to sort the 2 dimensional array below by column 1 then by column 2?

22 55
2222 2230
33 66
44 58
222 240

[Code].....

this is a small part in my awk script. the input data is not in file, but it was manipulated in my script.

View 6 Replies View Related

Programming :: Write Apr4sens In Array

Jun 3, 2011

[code]...

I manage to write apr4sens into file,works fine.But how to write it into array,which I could later reshape and so on. I tryied like this
group=apr4sens. It doesn't work.

View 1 Replies View Related

Programming :: Store The Results In An Array?

Apr 13, 2010

i have a loop which produces new value everytime it runs. i want to store the results in an array. how can i do dat??

loop is like:
a=0
declare v
while ((....))
do
v[$a]="$r"
let a=a+1
done

while doing this it is not treating v as array but as variable and it is overriding the value and old value is lost..i am using bash shell version 3.00.15

View 5 Replies View Related

Programming :: Assign Value To Array In Function

Oct 16, 2010

Here is statement.
$1[0]=0

$1 is an argument which is actually and array. In function we want to assign a value 0 of it's first content. But it's wrong way. Anybody know the right way to assign value in function by passing as argument.

View 3 Replies View Related

Programming :: Bash Array - More Than One Value Per Item?

Nov 28, 2010

Is it possible to have an array in Bash that can hold more than one value per item?

For example I would like an array like this:

Entry 1: apple, green
Entry 2: banana, yellow

And be able to call the fruit names and their colour in a list. Something like:

for fruit in "${array[@]}"
do
echo a $fruit is $colour
done

If that is possible, is there a limit to values per item? For example some entries in an array could be:

Entry 1: apple, green, round, pips, tree
Entry 2: banana, yellow, long, skin, tree

And I would like to pick out the values such as #3 being "round" and "long".

View 3 Replies View Related

Programming :: Best Way To Flush A Character Array

Aug 2, 2010

I believe I have unwanted ' characters left in a 9 element character array that are causing subsequent operations with it to fail. I see wildly differing views on the web on the proper way to flush 'em. It's clearly not as simple as it would appear at first sight. What's currently the best (or else "least deprecated") method?

View 5 Replies View Related

Programming :: C/C++ Dynamic String Array?

Mar 7, 2011

Can you create a dynamic string array and using calloc(),realloc()?
Like:

Code:
string* x;
x = (string) calloc(x,sizeof(string));

View 9 Replies View Related

Programming :: Calculating Average In PHP Array?

Jan 27, 2010

With array in php. All I was having the following columns:

Code:

Now Like the Above there were more variables defined through script:

Code:

Now what the above code is doing is calculating average of above values from columns{1-?,4-?)..likewise

Say If I remove two Machine and calculate the avg.

View 1 Replies View Related

Programming :: Extract Values From Array PHP

Jul 2, 2009

The idea is to make a website to check the availability of domains and it works but its not pretty yet. Below is what i have till so far:

## this is the API from my domain registrar.
<?php $client = new SoapClient('http://api.sync.com/?wsdl');
## I have a search box that sends the request to this page
$var = $_GET ["s"];

## remove the most common subdomains from the request.
$var=eregi_replace("www.", "", $var);
$var=eregi_replace("mail.", "", $var);
$var=eregi_replace("ftp.", "", $var);
$var=eregi_replace("pop.", "", $var);
$var=eregi_replace("smtp.", "", $var);

## remove any TLD extension from the request.
$split = explode(".", $var);
$main = $split[0];
$arraysize = sizeof($split);
for ($x=1; $x<$arraysize; $x++) {
$tld .= "." . $split[$x];
}
## login to the API
$paramLogin = array('handle' => 'randall', 'password' => 'password');

## match the domain with any possible TLD
$varcom = $paramAvailDomain = array('sld' => $main, 'tld' => 'com');
$varnet = $paramAvailDomain = array('sld' => $main, 'tld' => 'net');
$varorg = $paramAvailDomain = array('sld' => $main, 'tld' => 'org');
$varbiz = $paramAvailDomain = array('sld' => $main, 'tld' => 'biz');
$varinfo = $paramAvailDomain = array('sld' => $main, 'tld' => 'info');
$vareu = $paramAvailDomain = array('sld' => $main, 'tld' => 'eu');
$varnl = $paramAvailDomain = array('sld' => $main, 'tld' => 'nl');
$varbe = $paramAvailDomain = array('sld' => $main, 'tld' => 'be');
$varde = $paramAvailDomain = array('sld' => $main, 'tld' => 'de');
$varcouk = $paramAvailDomain = array('sld' => $main, 'tld' => 'co.uk');
$varorguk = $paramAvailDomain = array('sld' => $main, 'tld' => 'org.uk');
$varname = $paramAvailDomain = array('sld' => $main, 'tld' => 'name');
$varmobi = $paramAvailDomain = array('sld' => $main, 'tld' => 'mobi');
$varin = $paramAvailDomain = array('sld' => $main, 'tld' => 'in');
$vartv = $paramAvailDomain = array('sld' => $main, 'tld' => 'tv');
$varcn = $paramAvailDomain = array('sld' => $main, 'tld' => 'cn');
$varws = $paramAvailDomain = array('sld' => $main, 'tld' => 'ws');
$varnu = $paramAvailDomain = array('sld' => $main, 'tld' => 'nu');
$varbz = $paramAvailDomain = array('sld' => $main, 'tld' => 'bz');
$varcc = $paramAvailDomain = array('sld' => $main, 'tld' => 'cc');

## this requests the domain.COM and domain.NET
$varcom;
$varnet;
?>
<div id="content">

## below prints the result
<?php
print "<html><body><pre>";
$result1 = $client->__soapCall('Login', $paramLogin);
echo "<b>Result Login:</b>
" . print_r($result1, true);

$result15 = $client->__soapCall('AvailabilityDomain', $varcom);
$resvarcom = var_dump($result15, true);
$result15 = $client->__soapCall('AvailabilityDomain', $varnet);
$resvarnet = var_dump($result15, true);

print "</pre></html>";
?>
<?php

## the returned array looks like this

Result Login:
Array
(
[code] => 200
[message] => Login succesful
)
array(3) {
["code"]=>
string(3) "200"
["message"]=>
string(20) "Domain not available"
["result"]=>
object(stdClass)#236 (1) {
["status"]=>
string(5) "TAKEN"
}
}
bool(true)
array(3) {
["code"]=>
string(3) "200"
["message"]=>
string(16) "Domain available"
["result"]=>
object(stdClass)#232 (1) {
["status"]=>
string(4) "FREE"
}
}
bool(true)
?>
## till so far it works

What I need to do is to make this ugly looking reply in to something more readable, basically if TAKEN print occupied and if free print its yours to grab. I have been struggling with the in_array function but i'm not getting anywhere close in getting it to work.

View 2 Replies View Related

Programming :: Make A Dynamic Array In C?

Feb 12, 2010

I was thinking about how to make a dynamic array in C, and I thought that it would be much better if it could accept any data type. Is this possible? Of course I thought about void pointers, but how do I store the actual data?

View 7 Replies View Related

Programming :: Access A Delphi 2-D Array In C#?

Jun 30, 2011

I'm trying access binary records that were created in Borland Delphi and stored in a SQL Server database (as a BLOB). What the heck is the syntax for accessing a two-D array in C#? Here's an example:

Code:

const
MAX_BOWLERS = 8;
gMAX_FRAMES = 40;
...
type

[code]...

I've successfully got a valid "GameRec" over to C#-land. I want to access array element "GameRec.Frames[iBowler, iFrame]".

How do I define a C# type "TFrames = Array[1..Max_Bowlers, 0..gMax_Frames] of TFrame;" so that I can do it?

View 4 Replies View Related

Programming :: How To Access Four Dimensional Array

May 23, 2010

I have never used multidimensional array for a long time so please consider this as a newbie question. I am editing a program that uses a 4 dimensional array and I think I'm losing track of the indexes.

day = 0 to 30
hour = 0 to 23
channel = 0 to 7
len = 0 to 63
unsigned char idx[day][channel][hour][len];

I have seen that the assignment to a string is
snprintf(idx[day][hour][channel], 64, "%s/%s", dayofmonth, hourofday);
Is this correct? Because when I access with a day argument, that day value goes into the hour part.

View 9 Replies View Related

Programming :: How To Copy Array In Bash

May 13, 2010

I have this code:

Code:
original_content=${content[@]};
echo ${#content[@]} # is 23
echo ${#original_content[@]} # is 1

I'd expect original_content should be copy of content. How to copy array?

View 2 Replies View Related

Programming :: How To Find Array Length In C

Jul 3, 2011

I would like to know how can I find array length in C .I have array of structure and I want to sent it to different functions and I want to have it's length (number of elements) each time I want to use it and I don't like to use any additional variable to pass the function for each of arrays that I pass to function.
How can I do that?

View 5 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved