Why this time in line 12 *arr was used instead of arr
Because arr[0] is exactly the same as *arr
In general, arr[i] is exactly the same as *(arr + 1)
This is one of the most difficult and fundamental concepts of C programming. It took me years of reading and re-reading to "get it". You need to keep at this, because it's so important to understand pointers and arrays.
char *arr[] is an array of pointers. The loop keeps incrementing the address of the start of the array. Each time, it tests the contents of the first element, and if == NULL stops the loop. Each time, it prints the contents of the first element of the array, because *arr and arr[0] mean the same thing.
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Quote:
I always got error message like:
If you can compile, run, and understand this, it will likely help:
The second two loops are doing exactly the same thing, just written two different ways, *argv[iCount] and argv[iCount][0]
say I have a IP address which is 10.0.0.12, and subnet mask is 255.255.255.240, what is the network address and what is the broadcast address which host lives on?
And could you explain how to get the answer?
thanx in advance! (7 Replies)
Hi sir,
i want to make such programe which takes MAC(Ethernet) address of any host & give me its IP address.......
but i'm nt getting that how i can pass the MAC address to Frame........
Please give me an idea for making such program...
Thanks & regards
Krishna (3 Replies)
How do I get a pointer to any 32 bit address on my hard drive, in which I then could read that memory or write to that memory address?
And, while the subject is on, how do get a 32 bit pointer in RAM also, in which I can do the same?
I'm using C and Objective-C with gcc on an iBook G4.
A... (9 Replies)
Hi i'm new to c programming and i'm trying to change the address of a pointer/variable but i can't seem to get it right,
I have this
char heap;
char *firstFree = heap;
char *allocMem( int size ) {
void *malloc(size_t sizeofint);
/*allocate space for an array with size... (19 Replies)
If one wants to get a start address of a array or a string or a block of memory via a function, there are at least two methods to achieve it:
(1) one is to pass a pointer-to-pointer parameter, like:
int my_malloc(int size, char **pmem)
{
*pmem=(char *)malloc(size);
if(*pmem==NULL)... (11 Replies)
Trying to do a ksh script that needs to list all ip address between ip address a and b ..
ie.
Ip address A=192.168.1.200
Ip address B=192.168.2.15
So the subnet changes from 1 to 2 but I want to list all possible ip addresses between the 2..
Which would be:
192.168.1.200... (4 Replies)
:) Firstly Hi all!!, im NEW!! and on here hoping that someone might be able to offer me some help... i have a server that keeps crashing every few days with the error message:
PANIC KERNAL-MODE ADDRESS FAULT ON USER ADDRESS 0X14
KERNAL PAGE FAULT FROM (CS:EIP)=(100:EF71B5BD)
EAX=EF822000... (10 Replies)
Hi there
I lost connectivity to one of our remote systems and when I checked the messages log I found the following:
Aug 10 23:42:34 host xntpd: time reset (step) 1.681729 s
Aug 16 13:20:51 host ip: WARNING: node "mac address" is using our IP address x.x.x.x on aggr1
Aug 16 13:20:51 host... (9 Replies)
How can I print the memory address of a pointer using printf (or any other STDOUT functions?). I see in Linux its %p but not in unix, help?
thanks (5 Replies)
Hi ,
Could someone let me know how to detect duplicate ip address after assigning ip address to ethernet interface using c program (3 Replies)
Discussion started by: Gopi Krishna P
3 Replies
LEARN ABOUT PHP
collator_sort
COLLATOR_SORT(3) 1 COLLATOR_SORT(3)Collator::sort - Sort array using specified collator
Object oriented style
SYNOPSIS
public bool Collator::sort (array &$arr, [int $sort_flag])
DESCRIPTION
Procedural style
bool collator_sort (Collator $coll, array &$arr, [int $sort_flag])
This function sorts an array according to current locale rules.
Equivalent to standard PHP sort(3) .
PARAMETERS
o $coll
-Collator object.
o $arr
- Array of strings to sort.
o $sort_flag
- Optional sorting type, one of the following:
o Collator::SORT_REGULAR - compare items normally (don't change types)
o Collator::SORT_NUMERIC - compare items numerically
o Collator::SORT_STRING - compare items as strings
Default sorting type is Collator::SORT_REGULAR. It is also used if an invalid $sort_flag value has been specified.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
collator_sort(3) example
<?php
$coll = collator_create( 'en_US' );
$arr = array( 'at', 'as', 'as' );
var_export( $arr );
collator_sort( $coll, $arr );
var_export( $arr );
?>
The above example will output:
array (
0 => 'at',
1 => 'as',
2 => 'as',
)array (
0 => 'as',
1 => 'as',
2 => 'at',
)
SEE ALSO
Collator constants, collator_asort(3), collator_sort_with_sort_keys(3).
PHP Documentation Group COLLATOR_SORT(3)