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?
I want to calculate length of my array, say Unix here.
Code:
[linux1@HMLINUX1 abc]$ declare -a Unix=('Debian' 'Red Hat' 'Suse' 'Fedora');
[linux1@HMLINUX1 abc]$
[linux1@HMLINUX1 abc]$ echo ${#Unix[@]}
5
This should be ideally 4, but somehow it is showing as 5. However, when I am removing the space as RedHat instead of Red Hat, it is working perfectly.
Code:
[linux1@HMLINUX1 abc]$ declare -a Unix=('Debian' 'Redhat' 'Suse' 'Fedora');
[linux1@HMLINUX1 abc]$ echo ${#names[@]}
4
As subjected I have this warning message code...
How can I get rid of this warning message?
i am trying to find the size of an array, not by using the array as a parameter to "sizeof", but by using a pointer -pointing to the array- as a parameter. How do i do this?I use a 32-bit PC.Here's:
Code:
#include <string>
#include <iostream>
[code]...
This may be a basic bash array/string operation related question, but I couldn't find any direct answer. So here it goes:I have a lot of data sorted in various directories. All directories need same processing except for a special group of directories. I have a symbolic link of the script in discussion in each directory. I want the script to get the name of the current directory, check if that belongs to special group and do specific operations.So I get the name of the directory
Code:
mm=`basename `pwd``
Now the the group of directories that needs something different to be done, contains these
[code]...
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....
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?
i am trying to find all 3 and 4-character length words in my file (which is huge and has alot of entries in it, a big fat wordlist!).My attempt with this regular expression (which I thought should work, found something on length search here: [URL]
cat sorted_noapostrophe.txt| grep '.{3,4}'
but it returns no results? Also to find any words starting with 'f' which are between 3 and 5 characters (inclusive) long, how can this be done?
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'].'" />';
(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]....
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]....
I would like to extract Room number, Lastname,Firstname,invoice (205880080),arrival date, departure date, and total(229.46). Can you at least give me a hint on how to proceed? I have tried a lot but I am stumped from the beginning.
***History***
Room: 124 B Payment: Bell/TRAVELSCAPE.COM
Lastname*FIT*,Firstname 4A, 0K, 0B Guest
Bell *205880080 FT
Bell *205880080 July 31, 2010
[Code]...
in gcc how to read a blank line ie a string of length 0.my code:
Code:
#include<stdio.h>
#include<string.h>
[code]...
I've written a usb device driver and a program that sends and receives data over the bulk pipe. The read function sometimes returnsI'm reading an unknown amount of data. However, using a usb tracker I can see that the correct data is being sent.The error only occurs sometimes.I expect that the read function is told to read more data that it receives it would fail and return -1, however if this was the case then every read call would fail.
View 4 Replies View RelatedDoes anyoe have any example c/c++ code that is used to parse type-length-value messages.
The only decent article I can find on the web is:
http://en.wikipedia.org/wiki/Type-length-value
Bur it does not give any examples of parsing etc..
I'm programming some skript to get statistical information about some texts. This includes calculating the mean of word lengths.Unfortunately, Umlauts count as two characters. In the example below the output is 9, it should be 6.
sincercly, Max
Code:
#!/usr/bin/perl
use POSIX;
use locale;
my $test = length("ABC���");
print $test;
I'm working on an application that makes http requests using HttpRequest and it's been doing what I need so far without a problem. Now I need to make https requests as well and when I try to make the request, i get this error message:
Code:
Fatal error: Uncaught exception 'HttpInvalidParamException' with message 'Empty or too short HTTP message: ''' in /home/antoranz/waneesia/html/index.php:0 inner exception 'HttpRequestException' with message 'SSL connect error; gnutls_handshake() failed: A TLS packet with unexpected length was received. (https://www.paypal.com/)' in /home/antoranz/waneesia/html/index.php:104 Stack trace: #0 /home/antoranz/waneesia/html/index.php(0): HttpRequest->send() #1 {main} thrown in /home/antoranz/waneesia/html/index.php on line 0
What's going on?
The project: url
The declaration for directory record length in ext2 filesystem is as follows:
Code:
#define EXT2_NAME_LEN 255
struct ext2_dir_entry_2 {
__u32 inode; /* Inode number */
__u16 rec_len; /* Directory entry length */
__u8 name_len; /* Name length */
__u8 file_type;
char name[EXT2_NAME_LEN]; /* File name */
};
Some say because the record is not in a fixed length so rec_len is the real record length. Why is the length of the array `name' not fixed? I thought C arrays like this should be fixed length. C99 has variable-length arrays, does this structure count on C99?
I have an error like this : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''bla..bla..' at line 1. while call my function below:
function InsertSQL(strSQL: AnsiString; CS: TCriticalSection; var ErrMsg: AnsiString): boolean;
var
td: TDBCfg;
SockMySQL: PMySQL;
SQL: PChar;
begin
CS.Acquire;
[Code]...
The function always got this error while length of my strSQL contains more than 256 chars.
I want to find maximum length file in a given directory. It should search recursivley. I want this to be done using ls and simple looping constructs.
View 6 Replies View RelatedI 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 RelatedAs you know, the length of "Options" field in TCP header is floating. It may be from 0 to 40 bytes. Is there any (simple) way to find it or to send data with TCP headers of fixed length?
View 8 Replies View RelatedI am able to retrieve data off a RAID5 array. History: My system disk was partitioned to 10 gigs and over time was filled up to 100% locking me out of the GUI (I am a casual user). Now that I am relegated to the CLI, I need help to see if rebuilding the array and keeping the data intact is possible. I have three sata hard drives in the array and now it appears during the boot process, it fails and can't find the array.
I did the following:
mdadm -D /dev/md0
and here's some of the output:
State: active, FAILED, Not Started
And out of three drives, it states that two have failed. I find this hard to believe as I have had no issues until my system disk was full. A coworker today helped me find some files to delete and now have the system disk down to 97%/8.8 gigs yet I can still not enter the GUI due to the array issue.
Out of the three discs, here are the results (taken also from mdadm -D /dev/md0):
Number Major Minor RAID device STATE
0 8 1 0 active sync /dev/sda1
1 0 0 1 removed
2 0 0 2 removed
Sorry for providing so little, but I am in (Repair Filesystem) mode and only have local access to the machine meaning all outputs will need to be retyped.
I am able to do anything to the box as its only purpose was media storage and serving.
I am searching for a file in a specific folder using the following command and storing it in a log file
find . -maxdepth 2 -type f -name "components.xml" -print | while read obj
do
basename `dirname $obj` >> avail_list.log
done
Here I want to do the following
1. Store each entry after processing in an array variable.
2. Use this array variables as arguments to function calls.
Here my primary objective is to store the entries from 'find' command in an array. So it is ok for me if I am not creating the log file.
is it possible to get the length or even the items of both queues, the run queue and the swap queue? I've googled a lot but had no luck. Maybe I havn't used the correct search words...
Is there any header and/or code example to use structures or any API to get these information from the kernel or the scheduler?
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]);
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]...
I've got a problem...
a[0] = 22
echo $[a[0]]
echoes 22 - that works fine
[code]...
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 RelatedI'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