Hi to everybody,
I am begginer in C programming language.
My simple doubt is the difference between postfix & prefix unary
operator plus.
(i.e) i++ and ++i .
plz give me an example program with output.
2  2262 
"shan" <sr**********@g mail.com> wrote in message
news:11******** **************@ g49g2000cwa.goo glegroups.com.. . Hi to everybody,
I am begginer in C programming language.
My simple doubt is the difference between postfix & prefix unary
operator plus.
(i.e) i++ and ++i .
plz give me an example program with output.
The value of a prefix increment expression is the
value after the increment.
The value of a postfix increment expression is the
value before the increment.
#include <stdio.h>
int main()
{
int pre = 1;
int post = 1;
/* prints 2 1 */
printf("++pre == %d post++ == %d\n", ++pre, post++);
/* prints 2 2 */
printf(" pre == %d post == %d\n", pre, post);
return 0;
}
This is very fundamental C. Which texbook(s) are you
reading which don't explain this?
-Mike
shan wrote: Hi to everybody,
I am begginer in C programming language.
My simple doubt is the difference between postfix & prefix unary
operator plus.
(i.e) i++ and ++i .
This should be explained in any decent introductory C book.
`i++` returns the current value of `i`. `++i` returns one more than
the current value of `i`. Both eventually [1] increment `i`.
plz give me an example program with output.
Oh, /please/. /You/ write an example program for this. If you can't,
you're not ready for the ++ operators yet.
[1] By the next sequence point. Often a `;`.
--
Chris "electric hedgehog" Dollin
"I know three kinds: hot, cool, and what-time-does-the-tune-start?" This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Sergey |
last post by:
Hello!
Could anybody be kind enough to explain this concept?
Why C++ make two ops for prefix and postfix ++ operator?
As I guess, it is possible to implement both cases via sole
prefix increment operation. Correct me if I'm wrong,
Let's see trival example:
|
by: Christian Christmann |
last post by:
Hi,
is there a difference in terms of efficiency
when using a prefix "++x;" instead of a
postfix "x++;"?
Thanks
Chris
|
by: lovecreatesbeauty |
last post by:
Hello experts,
Why can this difference between prefix increment/decrement and
postfix increment/decrement reside in built-in operators for built-in
data types? Thanks.
// test.cpp
//
// >g++ test.cpp
// test.cpp: In function `int main()':
|
by: jrefactors |
last post by:
I heard people saying prefix increment is faster than postfix
incerement, but I don't know what's the difference. They both are
i = i+1.
i++
++i
Please advise. thanks!!
|
by: Rajesh S R |
last post by:
Consider the following code:
int main()
{
struct name
{
long a;
int b;
long c;
}s={3,4,5},*p;
p=&s;
| | |
by: Xah Lee |
last post by:
The Concepts and Confusions of Prefix, Infix, Postfix and Fully
Functional Notations
Xah Lee, 2006-03-15
In LISP languages, they use a notation like “(+ 1 2)” to mean “1+2”.
Likewise, they write “(if test this that)” to mean “if (test) {this}
else {that}”. LISP codes are all of the form “(a b c ...)”, where the
|
by: subramanian100in |
last post by:
Consider
int i = 10;
Why do we say that ++i yields an Lvalue and i++ yields an Rvalue ?
I thought both these expressions yield only values.
I am unable to understand the difference
|
by: swapnaoe |
last post by:
Hi,
In http://elearning.embnet.org/file.php/43/ctutorial/Postfix-and-prefix----and---.html I read about postfix and prefix unary operators.
It said " If the increment or decrement operator is used as a prefix, the operation is performed before the function call. If the operator is used as a postfix, the operation is performed after the function call. "
So accordingly
int x=4;
printf("%d%d", x++,x++);
the output should be 4 4
|
by: puzzlecracker |
last post by:
How can we implement operator ++ as postfix in prefix?
thanks
|
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,...
|
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: 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...
|
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 projectplanning, coding, testing, and deploymentwithout 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...
|
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 Dupr 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...
|
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();...
|
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...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
| | |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
