473,811 Members | 3,627 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

What is an implicit extern "C" declaration?

Hi,

What is implicit extern "C" declaration in C++?
Can anybody give me an example?

Thanks a lot!

Andy

Jul 23 '05 #1
2 2476
Andy wrote:
Hi,

What is implicit extern "C" declaration in C++?
Can anybody give me an example?


Where did you get that question?

--
Attila aka WW
Jul 23 '05 #2
What is implicit extern "C" declaration in C++?
Can anybody give me an example?


It's a linkage directive. It tells the compiler that a function has
been written in a different programming language (i.e. C) and that
different requirements apply (e.g the function's name will not be
encoded like a regular C++ function). There's a good example here that
applies to writing dlls. For more see Lippman.
http://www.functionx.com/visualc/lib.../staticdll.htm

Jul 23 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

43
5134
by: steve | last post by:
I am quite frustrated with php’s include, as I have spent a ton of time on it already... anyone can tell me why it was designed like this (or something I don’t get)? The path in include is relative NOT to the immediate script that is including it, but is relative to the top-level calling script. In practice, this means that you have to constantly worry and adjust paths in includes, based on the startup scripts that call these...
2
2943
by: steve | last post by:
Hi, I need to do conditional script "include", but like to pull the code from db instead of a file. How do I do that? Reason: I like to implement some complex regex logic, and make it table driven. The regex would include if/then/else type logic, and would like my script to conditionally execute the logic. -- http://www.dbForumz.com/ This article was posted by author's request
5
4357
by: daz_oldham | last post by:
Hi everyone I am a new poster to this group, so hello to you all! Having just started a new job I have been thrown in the deep end with some heavy XML work so I am finding my feet and I am sure that this will be the first of many posts on here! My first question is to do with Complex Types in XSD. I have figured out what a complex type is, and I have found that what the API provider
8
3622
by: Ulysse | last post by:
Hello, I need to clean the string like this : string = """ bonne mentalit&eacute; mec!:) \n <br>bon pour info moi je suis un serial posteur arceleur dictateur ^^* \n <br>mais pour avoir des resultats probant il faut pas faire les mariolles, comme le &quot;fondateur&quot; de bvs
2
4006
by: Angus | last post by:
I am trying to change the selection in Javascript - but this HTML element is not a standard option control. On the web page it looks like a dropdown list - and you click on the right hand down arrow and you see the entries in a dropdown. But how would I control this thing from javascript? Here is the HTML: <div class="selection" style="top:0; left:89; width:159; height:21;"
1
2845
by: manchin2 | last post by:
Hi, Can anybody please provide the information about "&quot" and its use, if possible please provide an example. 1)<tm:bom-expression>{Conf.getEquityConfLookupFields().getEventFieldText(&quot;AdditionalDisruption&quot;,&quot;Change in Law&quot;)}</tm:bom-expression> 2)07:41:08 Default ( call ( . ( call ( . Conf getEquityConfLookupFields ) ) getEventFieldText ) ( , AdditionalDisruption Change inLaw ) ) value=Not applicable Can you please...
4
4218
by: thaytu888888 | last post by:
Here is my codes in aspx page: <td colspan="2" class="main_menu" runat="server" onclick='toggleDisplay(<%#Eval("description")%>);'><%#Eval("description")%></td> Here is in "View source": onclick="toggleDisplay(&lt;%#Eval(&quot;description&quot;)%>);">Administrator Functions</td> When putting <%#Eval('description')%> in <td> tag, it understand & show the correct value, but when in onclick='toggleDisplay(<%#Eval("description")%>);'> it didn't...
10
7467
by: Horacius ReX | last post by:
Hi, in some C program I need to port to some architecture, I send to a function the parameter char with predefined values. Inside the function, this data is read and something is calculated. But for some reasons that I can not explain here (too long) the memory is really small and I would need to use the space used by this char. Then I wonder if it can be deleted or destroyed in some way. Afterwards I need to use malloc and free and I...
19
391
by: Karel Van Laer | last post by:
Hi everyone, I need to be able to mix C and C++. The main program is written in C and needs to access C++ code. To be more specific it's a user defined function in fluent, but this should not be relevant. I've allready read that i need to use the extern "C" construction but i don't seem to be doing it right.
0
9730
marktang
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...
0
10651
Oralloy
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...
0
10392
jinu1996
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...
0
10136
tracyyun
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...
1
7671
isladogs
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...
0
6893
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();...
0
5693
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
3868
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
3020
bsmnconsultancy
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...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.