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by: Nimmi Srivastav |
last post by:
Once and for all can someone kindly tell me the difference between C
and C++ linkage. I thought I understood it till someone showed me the
other day that C functions, that would ordinarily require the
extern "C"
declaration, for correct linkage into a C++ program, don't need it if
the filename, in which they are defined, ends in .cc or .cpp! Can
anyone explain this in a rational manner?
For the record, this is what I have heard...
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by: Richard Hayden |
last post by:
Hi,
I have the following code:
/******************************** file1.c
#include <iostream>
extern void dummy();
inline int testfunc() {
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by: Grumble |
last post by:
Hello everyone,
As far as I understand, the 'inline' keyword is a hint for the compiler
to consider the function in question as a candidate for inlining, yes?
What happens when a function with extern linkage is inlined? Should the
compiler still export the function?
Or is an inlined function implicitly static?
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by: Ian |
last post by:
The title says it all.
I can see the case where a function is to be called directly from C, the
name mangling will stuff this up.
But I can't see a reason why a template function can't be given extern
"C" linkage where it is to be assigned to a C function pointer.
Ian
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by: Mark A. Gibbs |
last post by:
I have a question about mixing C and C++.
In a C++ translation unit, I want to define a function with internal
linkage and C calling convention. Here's a sample of what I want to do:
// main.cpp
// This is defined in a C module
extern "C" void fake_qsort(void*, std::size_t, std::size_t,
int (*compare)(const void*, const void*));
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by: Neelesh Bodas |
last post by:
Hello All,
I was just listing down various ways in which variables can be created
and destroyed in C++. (On the lines of 10.4.3 TC++PL Ed 3)
Putting the summary here for corrections, comments, criticism, advices,
improvements.
Abbreviation:
Created (C)
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by: Bit byte |
last post by:
I have an application written in C (actually PostgreSQL). The
application appears to have been built using the Mingw set of tools
(mingw compiler tools).
I want to write an extension library library to be used by this
application. Do I have to use the same compiler used to create the
application - or is this irrelevant - i.e. can I use ANY compiler to
write the extension library.
The larger question I want to ask really (for the...
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by: mimi |
last post by:
The programmer indicates to the compiler that a function is written
in a different programming language using a linkage directives.It is
intuitive that extern "SomeLanguage" is used to declare functions
written in the "SomeLanguage".
But I am quite confused what information does the linkage directive
tells the compiler.The "generated" function name? The way the
arguments are ordered?Or something else?
And I am still wondering why extern...
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by: sulekhasweety |
last post by:
Hi,
the following is the definition for calling convention ,which I have
seen in a text book, can anyone give a more detailed explanation in
terms of ANSI - C
"the requirements that a programming system places on how a procedure
is called and how data is passed between a calling program and
procedures are called calling conventions"
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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: 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.
The Art of Business Website Design
Your website is...
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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: 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: 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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