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by: CoolPint |
last post by:
Can anyone clearly explain the difference between constant reference to
pointers and reference to constant pointers?
What is const int * & ?
Is it a constant reference to a pointer to an integer? Or
Is it a reference to a pointer to a constant integer?
What is being constant in this case? The pointer or the integer being pointed?
How about int * const & ?
Is this a reference to a constant pointer to an integer? Or
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by: Alfonso Morra |
last post by:
I have written the following code, to test the concept of storing
objects in a vector. I encounter two run time errors:
1). myClass gets destructed when pushed onto the vector
2). Prog throws a "SEGV" when run (presumably - attempt to delete
deleted memory.
Please take a look and see if you can notice any mistakes I'm making.
Basically, I want to store classes of my objects in a vector. I also
have three further questions:
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by: David Mathog |
last post by:
If this:
int i,sum;
int *array;
for(sum=0, i=0; i<len; i++){
sum += array;
}
is converted to this (never mind why for the moment):
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by: E. Robert Tisdale |
last post by:
What is an object?
Where did this term come from?
Does it have any relation
to the objects in "object oriented programming"?
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by: Abhishek |
last post by:
why do I see that in most C programs, pointers in functions are
accepted as:
int func(int i,(void *)p) where p is a pointer or an address which is
passed from the place where it is called. what do you mean by pointing
to a void and why is it done?
Aso, what happens when we typecast a pointer to another type. say for
example int *i=(char *)p;
under different situations? I am kind of confused..can anybody clear
this confusion by clearly...
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by: Egbert Nierop \(MVP for IIS\) |
last post by:
In win32 mode, a BSTR was UINT length prefixed and terminated exactly by a
zero char.
So if you allocated "Hello World" that would allocate 28 bytes.
In x64 and (IA64 as well) it would become 32 bytes, because of the fact that
a pointer, is 8 bytes instead of 4 bytes.
The length prefix -still- is a UINT however and not a UINT_PTR.
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by: Omats.Z |
last post by:
what is meaning os "char **option meet"?
I get a function like this:
__________________________________
int getchoice(char *greet, char *choices)
{
int chosen = 0;
int selected;
char **option; // what is this line mean?
do {
printf("Choice: %s\n", greet);
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by: Pat |
last post by:
Hi,
I've run into a strange problem, but one that seems like it might be
fairly common.
I have a single base class, from which several other classes are derived.
To keep the example simple, the base class is "Animal" and the derived
classes are "Cat," "Dog," and "Horse."
The base class has a pure virtual method:
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by: Michael Bell |
last post by:
I am trying to put my learning effort into the most useful things.
What do pointers do that other things can't?
Michael Bell
--
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by: prashant.khade1623 |
last post by:
I am not getting the exact idea.
Can you please explain me with an example.
Thanks
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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: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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