| |
by: soni29 |
last post by:
hi,
i currently reading a book on C++, the author just covered the topic
of pointer to functions, but never mentioned the use. if possible
could someone please tell me when to use them, why not such make the
function call without the pointer?
Thank you.
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by: Mike Hewson |
last post by:
Have been researching as to why:
<example 1>
class ABC
{
static const float some_float = 3.3f;
};
<end example 1>
|
by: TTroy |
last post by:
Hello, I'm relatively new to C and have gone through more than 4 books
on it. None mentioned anything about integral promotion, arithmetic
conversion, value preserving and unsigned preserving. And K&R2
mentions "signed extension" everywhere.
Reading some old clc posts, I've beginning to realize that these books
are over-generalizing the topic. I am just wondering what the
difference between the following pairs of terms are:
1)...
|
by: Romeo Colacitti |
last post by:
Is the C library of most OSes (i.e, unix type OSes) implemented at the
very low kernel or just outside kernel level?
Looking through the source tree of Linux/BSDs it seems like the C
library is intertwined with the OS (string.h and other headers are
there). So does this mean that when I program in C and use standard
library functions, it's similar to calling the OS specific APIs (same
type of performance)?
Seeing all these Standard...
|
by: Gregory Pietsch |
last post by:
I'm writing a portable implementation of the C standard library for
http://www.clc-wiki.net and I was wondering if someone could check the
functions in math.h for sanity/portability/whatever. I'm almost halfway
through writing the over 200 functions needed to implement C99's
version of math.h, and I would like to have some feedback and/or expert
advice on my implementations.
Sincerely, Gregory Pietsch
|
| |
by: Tomás |
last post by:
When you simply want to store a number, what integral type do you use?
For instance, let's say we have the following in a Poker game:
struct Card
{
enum Suit { Hearts, Diamonds, Spades, Clubs } suit;
int value;
};
|
by: Neelesh Bodas |
last post by:
Can somebody please explain the fine difference between these two
clauses of the standard:
4.5 (Integral promotions)
4. An rvalue of type bool can be converted to an rvalue of type
int, with false becoming zero and true becoming one
4.7 (Integral conversions)
4. If the source type is bool, the value false is converted to zero
|
by: Ranganath |
last post by:
Hi,
Why is there a restriction that only integral types can be made static
constant members of a class?
For e.g.,
class B {
private:
static const double K = 10;
};
|
by: Hendrik Schober |
last post by:
Hi,
this
#include <string>
class test {
typedef std::string::size_type size_type;
static const size_type x = std::string::npos;
};
doesn't compile using either VC9 ("expected constant expression")
or Comeau Online ("constant value is not known"). If I replace
|
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,...
|
by: jinu1996 |
last post by:
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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,...
|
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...
|
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...
|
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();...
|
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...
|
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: bsmnconsultancy |
last post by:
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