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by: Rajan |
last post by:
Hi All C++ Experts
(1)I want have a simple suggestion from u all experts
which is preferable const or #define and in which cases
(2)in my project i want to avoid hardcoding , for that
i have defined macros in my header files. but we have coding
rules that says "use const for avoiding hardcoding".My question is
that "what will be the difference in terms of memory for Const vs #
Define"
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by: Bryan Parkoff |
last post by:
"#define" can only be inside the global scope before main() function.
"#if" can be tested after "#define" is executed. The problem is that
"#define" can't be inside main() function. I do not wish to create multiple
functions which they look almost identical in C++ source code. The C++
compiler should be able to compile one Test() function into two almost
identical functions before they are translated into the machine language
object. ...
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by: BQ |
last post by:
Hello
Is there a way to declare 'FUNCT' via a define so that if its parameter x, a constant, is
greater than 35, it returns 56, if not, 20.
I would like that at compile time, not at run time.
So:
#define FUNCT(x) x>35?56:20
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by: MakisGR |
last post by:
I'm having trouble understanding what the following define does. Can
anyone provide some assistance?
#define SetBits(bits,pos) (((bits)) |= (1 << ((pos) &
7)))
--
comp.lang.c.moderated - moderation address: clcm@plethora.net
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by: baumann |
last post by:
hi all,
typedef int (*pfunc)(int , int);
pfunc a_func;
i know it's ok,
but how can define a_func without typedef statement?
thanks .
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by: D. Shane Fowlkes |
last post by:
<asp:SqlDataSource ID="sqlCapBudgetItems" runat="server"
ConnectionString="<%$ ConnectionStrings:NETWebConnectionString %>"
SelectCommand="SELECT * FROM WHERE ( =
@ApplicationID)">
<SelectParameters>
<asp:Parameter DefaultValue="5477" Name="ApplicationID" Type="Int32" />
</SelectParameters>
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by: venkat |
last post by:
I have come across some preprossor statements, such as
#define PPTR_int
#define PPTR_str
#define DDAR_baddr &
#define DDAR_caddr &
What do they mean, but when i compile the code with these i
am not getting any errors .
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by: anon.asdf |
last post by:
Hello!
In the following code-snippet, is it possible to initialize each
element of arr, with STRUCT_INIT?
struct mystruct {
int a;
char b;
};
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by: ravi |
last post by:
Hello everybody,
I am writing a small application which does some work before the user
main function starts execution.
I am trying to #define the main function.
But the problem is that,
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by: Lambda |
last post by:
I'd like to define a std::map: map<struct term, vector<size_t.
The definition of the structure is:
struct term {
string word;
size_t freq;
};
the freq is the size() of vector<size_t>.
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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: 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.
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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: 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: 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: 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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