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by: Simon Bailey |
last post by:
In the following code at the end of the program z = 20 & y = 99.
void doit(const int* x)
{
int* nonconst;
nonconst = const_cast<int*>(x);
*nonconst = 99;
}
int main(int argc, char* argv)
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by: Scott J. McCaughrin |
last post by:
The following program compiles fine but elicits this message from the
linker: "undefined reference to VarArray::funct" and thus fails.
It seems to behave as if the static data-member: VarArray::funct were
an extern, but it is declared in the same file (q.v.). What is the
remedy for this?
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by: Joona I Palaste |
last post by:
We all know that this:
void *p;
if (p=malloc(1)) {
free(p);
p;
}
causes undefined behaviour if malloc() succeeds. But what about this?
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by: Nitin Bhardwaj |
last post by:
Well, i'm a relatively new into C( strictly speaking : well i'm a
student and have been doing & studying C programming for the last 4
years).....and also a regular reader of "comp.lang.c"
I don't have a copy of ANSI C89 standard,therefore i had to post this
question:
What is the difference between "unspecified" behaviour & "undefined"
behaviour of some C Code ??
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by: Ken Turkowski |
last post by:
The construct
(void*)(((long)ptr + 3) & ~3)
worked well until now to enforce alignment of the pointer to long
boundaries. However, now VC++ warns about it, undoubtedly to help things
work on 64 bit machines, i.e. with 64 bit pointers.
In the early days of C, where there were problems with the size of int
being 16 or 32 bits, the response was that an int was guaranteed to hold
a pointer (yes, there were 64Kb address spaces at one time!)....
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by: RoSsIaCrIiLoIA |
last post by:
On Mon, 07 Feb 2005 21:28:30 GMT, Keith Thompson <kst-u@mib.org>
wrote:
>"Romeo Colacitti" <wwromeo@gmail.com> writes:
>> Chris Torek wrote:
>>> In article <4205BD5C.6DC8@mindspring.com>
>>> pete <pfiland@mindspring.com> wrote:
>
>>> >If you have
>>> > int array;
>>> >then
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by: Frederick Gotham |
last post by:
I have a general idea of the different kinds of behaviour described by the
C Standard, such as:
(1) Well-defined behaviour:
int a = 2, b = 3;
int c = a + b;
(Jist: The code will work perfectly.)
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by: Franz Hose |
last post by:
the following program, when compiled with gcc and '-std=c99', gcc says
test.c:6: error: jump into scope of identifier with
variably modified type
that is, it does not even compile.
lcc-win32, on the other hand, reports
Warning test.c: 7 unreachable code
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by: subramanian100in |
last post by:
Consider the following code:
#include <iostream>
#include <cstdlib>
using namespace std;
int main()
{
const double& ref = 100;
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by: coolguyaroundyou |
last post by:
Will the following statement invoke undefined behavior :
a^=b,b^=a,a^=b ;
given that a and b are of int-type ??
Be cautious, I have not written a^=b^=a^=b ; which, of course, is
undefined. I am having some confusion with the former statement!
Also, state the reason for the statement being undefined!
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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: 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: 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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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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