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by: Don Starr |
last post by:
When applied to a string literal, is the sizeof operator supposed to return the size of the string
(including nul), or the size of a pointer?
For example, assuming a char is 1 byte and a char * is 4 bytes, should the following yield 4, 5, of
something else? (And, if something else, what determines the result?)
char x = "abcd";
printf( "%d\n", sizeof( x ) );
-Don
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by: Olivier Bellemare |
last post by:
I've tried to make a function that returns the middle of a string. For
example:
strmid("this is a text",6,4); would return "is a".
Here is my code:
char *strmid(char *texte, int depart, int longueur)
{ char *resultat = " ";
char *temporaire = " ";
int nbr;
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by: al |
last post by:
char s = "This string literal";
or
char *s= "This string literal";
Both define a string literal. Both suppose to be read-only and not to be
modified according to Standard. And both have type of "const char *".
Right? But why does the compiler I am using allow s to be modified, instead
of generating compile error?
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by: Janice |
last post by:
char* line = "abcd";
How to convert the line to upper case and print?
Any option for printf to do this?
Thanx
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by: kobu.selva |
last post by:
I was recently part of a little debate on the issue of whether
constants and string literals are considered "data objects" in C. I'm
more confused now than before.
I was always under the understanding that only "named" storage
areas(from the standard) were data objects. Since constants and string
literals don't have lvalues, they can't be data objects. Yet, I was
shown the first page of chapter 2 in K&R2, which states that variables...
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by: junky_fellow |
last post by:
what would be the output for the following piece of code ?
if ( "hello" == "hello" )
printf("True\n");
else
printf("False\n");
What is the reason for that ?
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by: Dead Loop |
last post by:
Hi all,
I'm a beginner and my question is:
Are there any differences between
char *p = "Hello, world!";
and
const char *p = "Hello, world!";
?
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by: arnuld |
last post by:
i tried to output these 2 to the std. output:
const std::string hello = "Hello";
const std::string message = hello + ", world" + "!";
const std::string exclam = "!";
const std::string message2 = "hello" + " world" + exclam;
the first one runs fine but 2nd does not as we can not combine 2
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by: karthikbalaguru |
last post by:
Hi,
String constant being modifiable in C++ but, not modifiable in C.
that is,
In C++, the following example output will be "Mplusplus"
char *str1 = "Cplusplus";
*str1 = 'M';
In C, the above example will produce an error as we are trying to
modify a constant.
So, str1 is not a string constant in C++.
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by: polas |
last post by:
Good morning,
I have a quick question to clear up some confusion in my mind. I
understand that using a string literal in a declaration such as char
*p = "string literal" declares a pointer to memory holding the string
and the string might very well be held in read only memory.
However, I am sure that I read somewhere that the declaration char a
= "string literal", even though a is an array (and I understand the
differences between...
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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: 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: 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: 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: 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: 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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