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by: ambar.shome |
last post by:
Hi ,
Can anyone tell me when should I use char**. Does it have nay extra
advantage over char*& ? "strtol" function takes char** as one of its
parameters. But,cant understand why that is needed? The same purpose
could have been served using char* only.
Looking forward to your replies and help inthis regard.
Thanks & Regards
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by: jab3 |
last post by:
(again :))
Hello everyone.
I'll ask this even at risk of being accused of not researching adequately.
My question (before longer reasoning) is: How does declaring (or defining,
whatever) a variable **var make it an array of pointers?
I realize that 'char **var' is a pointer to a pointer of type char (I hope).
And I realize that with var, var is actually a memory address (or at
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by: mr_semantics |
last post by:
I have been reading about the practise of casting values to unsigned
char while using the <ctype.h> functions. For example,
c = toupper ((unsigned char) c);
Now I understand that the standard says this about the <ctype.h>
functions:
"The header <ctype.h> declares several functions useful for classifying
and mapping characters.166) In all cases the argument is an int, the
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by: poison.summer |
last post by:
For instance, I'd like to use unsigned char as an 8-bit integer.
Can I use like
unsigned char a=0;
a++
Thanks a lot!
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by: Arnold |
last post by:
I am having problem loading the image from the database. It gives this error:
"Invalid parameter used."
This is my source code:
Private abyt() As Byte
Private fo As New OpenFileDialog
Private sf As New SaveFileDialog
Dim strCn As String = "Data Source=DATABASE\BARCA;" & _
"Initial Catalog=MIS;Integrated Security=SSPI"
Dim cn As SqlConnection = New SqlConnection(strCn)
Dim fs As IO.FileStream
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by: Bri |
last post by:
AC97 on WinXP, Image control on a Form and on a Report.
I have followed the advice on the following MVPS page:
http://www.mvps.org/access/api/api0038.htm
This states that after changing the Registry setting for the progress
bar to 'no' that it should no longer display. I have made the change,
but the progress bar continues to display.
Am I missing something? Does the PC need to be rebooted after the
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by: greywire |
last post by:
So I need to load lots of data into my database.
So I discover LOAD DATA INFILE.
Great! This little gem loads my CSV in blazing times (compared to
parsing the file and doing INSERT for each row). Its still slow on
large files, but just barely acceptable.
Only one problem. It truncates fields to 256 characters, even on a
text field.
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by: Virtual_X |
last post by:
if we use char in a function parameter like that
void st(char x)
{cout << x;}
and char* as a parameter in the same function instead of char x
what would be different
in my experiments i conclude that
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by: DomoChan |
last post by:
the code below will compile in visual c++ 2003, but im not sure its
valid.
unsigned char myString = "";
after this line executes, all the bytes within myString are indeed set
to '0's' but is this really valid c++ or c? where can I find out how
this is implemented?
Im concerned because I had a 3rd party library wrapper which was
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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,...
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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...
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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,...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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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();...
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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...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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