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by: Mark Turney |
last post by:
I was reading "Practical C++ Programming" yesterday, and it mentioned
that the order of execution for post-increment and post-decrement
operators was ambiguous.
I had previously learned that a post-increment or post-decrement
operator modifies the operand once the entire statement has been
executed, not during execution of the statement, so this confused me.
An examples given to illustrate the ambiguity is:
a = i++; // may increment...
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by: Robert Swan |
last post by:
I'd like to know why the following program outputs 1, and not 0.
#include <iostream>
class a {
int v;
public:
a():v(0){}
a& operator++(int) {
v++;
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by: kailasam |
last post by:
Hello,
Iam having a doubt. Which is more efficient post increment or Pre increment?
I have read that preincrement is efficient than Post increment. Iam not able
to think how it is?
For an independent statement i++ and ++i which is more efficient?
Regards
Kailasam
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by: Angel Tsankov |
last post by:
Should pre/post increment/decrement return const or non-const?
What about other functions?
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by: divya_rathore_ |
last post by:
The code:
int aaa = 100;
printf("%d %d %d\n", --aaa, aaa, aaa--);
printf("%d\n", aaa);
prints:
99 100 100
98
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by: Scott Gifford |
last post by:
Hello,
I'm working on an providing an iterator interface to a database. The
basic thing I'm trying to accomplish is to have my iterator read rows
from the database and return constructed objects. My goal here is to
abstract away the database part, so that in the future these objects
could be constructed from a data source on disk, across the network,
etc. The interface I'm after is similar to the standard iterator
interface for an...
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by: jehugaleahsa |
last post by:
Hello:
In C++, you had to distinguish between post and pre increments when
overloading. Could someone give me a short demonstration of how to
write these?
I get the impression that are handled with the same overload, but I
just want to make sure.
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by: simudream |
last post by:
//hi maybe helpful others can look at this code and
//tell me why the class code won't behave like
//intrinsic types with post and pre increment
//Version: 1.00
#include <iostream>
using std::cout;
using std::endl;
using std::ostream;
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by: bintom |
last post by:
Why doe the following C++ code behaves as it does?
int i;
i=1; cout << (++i)++; Output: 2
i=1; cout << ++(++i); Output: 3
i=1; cout << (i++)++; Output: Error. LValue required
i=1; cout << ++(i++); Output: Error. LValue required
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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: 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: 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: 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: 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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