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by: qazmlp |
last post by:
const has internal linkage in C++, but external linkage in C.
Am I right ?
But, linker reports multiply-defined error if the
following header is included in multiple .cpp files.
// test_const.h
#ifndef HEADER_TEST
#define HEADER_TEST
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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: 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: pembed2003 |
last post by:
Hi all,
I am reading the book "C How to Program" and in the chapter where it
discuss scope rule, it says there are four scopes for a variable:
function scope
file scope
block scope
function-prototype scope
I think(might be wrong):
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by: al.cpwn |
last post by:
do static and inline functions or members have internal linkage? I have
been reading this newsgroup on google and found conflicting ideas. Can
someone please help me understand why in some places inline may have
external linkage while in others it has internal (from what I have read
in comments by people). Are there any (other) places where linkage is
ambiguous?
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by: fctk |
last post by:
source: http://rm-f.net/~orange/devel/specifications/c89-draft.html#3.1.2.2
there are two passages in this paragraph i can't fully understand:
1) "If the declaration of an identifier for an object or a function
contains the storage-class specifier extern , the identifier has the
same linkage as any visible declaration of the identifier with file
scope. If there is no visible declaration with file scope, the
identifier has external...
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by: Nagrik |
last post by:
Dear Group,
The book of Bjarne Stroustrup in chapter 5.4.4 says the following
"The word static is one of the most overused words in C and C++. For
static data members it has both of the common meanings: static as in
"statically allocated" as opposed to on the stack or on the free store
and static as in "with restricted visibility" as opposed to with
external linkage. For member functions, static has the second
meaning."
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by: Taras_96 |
last post by:
Hi everyone,
AFAIK external linkage allows you to refer to variables/functions
outside of the current translation unit. A variable in an unnamed
namespace is similar to declaring a static variable, but according to
the standard there is a difference:
"While this is essentially true in practical effect, there are subtle
differences. Using static as shown here causes "i" to have internal
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by: Giacomo Catenazzi |
last post by:
Hello,
To learn the details of C, I've build the following example,
could you check if it is correct and if it miss some important
cases?
Are there some useful (real cases) examples of:
- "function prototype scope" for structures and unions?
- "extern" for internal linkage ?
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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...
|
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: Hystou |
last post by:
Overview:
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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: 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: bsmnconsultancy |
last post by:
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