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by: ali |
last post by:
Hi,
I'm trying to understand the reason for different output on the
following codes
Code1:
#include <iostream.h>
int main()
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by: iceColdFire |
last post by:
HI,
I have a function as
void f(int p)
{
return p++;
}
now I have created a function pointer as
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by: __PPS__ |
last post by:
Hello everybody
in a quiz I had a question about dangling pointer:
"What a dangling pointer is and the danger of using it"
My answer was:
"dangling pointer is a pointer that points to some area of ram that's
not reserved by the program. Accessing memory through such pointer is
likely to result in core dump (memory access violation)"
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by: Ike Naar |
last post by:
Hi,
Asking your advice on the following subject:
Suppose I want to find out whether a given pointer (say, p) of type *T
points to an element of a given array (say, a) of type T.
A way to achieve this would be a linear search through the array:
int ptrInArrSafe(T *p,T *a,int max)
/* check whether p points to an element of a */
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by: dough |
last post by:
Is it possible in C to declare and initialize a pointer that points to
itself? Why or why not?
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by: Jeff |
last post by:
I am struggling with the following
How do I marshal/access a pointer to an array of strings within a structure
Than
Jef
----------------------------------------------------------------
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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: khan |
last post by:
Hi,
I read that pointer representation can non-zero bit pattern, machine
specific.Compiler when comes accross value '0' in pointer context,
converts it to machine specific null pointer bit-pattern.
My question is if a program refers to that specific value which is
used by the machine to refer to null pointer, how compiler treats
that?.
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by: lithiumcat |
last post by:
Hi,
maybe you remember me, some time ago I asked about how to store an
integer value into a void*, and I learned that doing pointer
arithmetic yeilding a pointer outside of an object (except the one-
after-last thingy) is undefined behaviour.
Actually I was trying to associate a function pointer with a key,
through an AVL tree that managed void* data. Function pointers can't
be stored in void* (that is, the standard does not garantee...
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by: Szabolcs Borsanyi |
last post by:
Deal all,
The type
typedef double ***tmp_tensor3;
is meant to represent a three-dimensional array. For some reasons the
standard array-of-array-of-array will not work in my case.
Can I convert an object of this type to the following type?
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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: 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: 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: 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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