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by: David Rasmussen |
last post by:
If I have this
struct S
{
int arr;
};
and I do this:
S s1,s2;
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by: Roy Hills |
last post by:
When I'm reading from or writing to a network socket, I want to use a
struct to represent the structured data, but must use an unsigned char
buffer for the call to sendto() or recvfrom().
I have two questions:
1. Is it generally safe to "overlay" the structure on the buffer,
e.g.:
unsigned char buffer;
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by: Xavier Noria |
last post by:
Given two structures of the same size but different type, does C99
guarantee that pointers to them can be casted one to each other, and
that the order of the elements will be kind of respected?
This code illustrates what I mean:
int main(void) {
struct foo { char c; };
struct bar { char c0; char c1; };
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by: hermes_917 |
last post by:
I want to use memcpy to copy the contents of one struct to another
which is a superset of the original struct (the second struct has extra
members at the end). I wrote a small program to test this, and it
seems to work fine, but are there any cases where doing something like
this could cause any problems?
Here's the small program I wrote to test this:
#include <stdio.h>
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by: Victor Bazarov |
last post by:
Below you will find some code I wrote to see if I could wrap array copying
(especially for multi-dimensional arrays) in a simple class and/or
function. It seems to work fine for one-dimensioned arrays as well as
two-dimensioned ones. I am sure three- or more-dimensioned array are just
as OK here.
My concern was that I couldn't use 'std::copy' to copy multi-dimensional
arrays. Perhaps in the future we'll see specialisations of...
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by: Johs32 |
last post by:
I have made a pcb pointer called current. I have then made another pointer
(old_thread) that I initialize to point to the same area that current
points to.
If I make changes to current afterwards it also changes what old_thread
points to.
Why do old_thread change when I change current afterwards? If I make changes
to current AFTER copying it to old_thread, I don't see why this affects
old_thread.
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by: webfan |
last post by:
In the code below, will the assignment z= y do bitwise copying?
struct x
{
int a;
int b;
int c;
};
main()
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by: Mr John FO Evans |
last post by:
Am looking at adding structures to an embedded C emulator but am wondering
what the standard is for copying structures(ie structa=structb) which
contain pointers to memory and which are therefore not contiguous in memory.
When such structures are copied what should C do with these elements? Or
should copying be illegal in this case?
John
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by: DaTurk |
last post by:
This is probably a very silly, and simple question. If I'm coding in
CLI, and I want to copy an array to an array, not a deep copy, just
something of the nature arr1 = arr2, what is going on?
I assumed the address of the first element is getting copied, so i
essentially have two handles to the same memory. And changes in one
would be reflected in the other.
But what if I have something like this
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by: O.B. |
last post by:
When using Marshal to copy data from a byte array to the structure
below, only the first byte of the "other" array is getting copied from
the original byte array. What do I need to specify to get
Marshal.PtrToStructure to copy the all the data into the "other"
array?
unsafe public struct DeadReckoning
{
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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: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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: 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: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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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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