Solved

Strings

Posted on 2000-02-24
6
156 Views
Last Modified: 2010-04-02
Hello experts...

First I'm programing for windows.

Well...
Some api calls returns a pointer to a NULL terminated character string.
The problem is... I'd like to copy that string to another place in memory...
In VB I'd do this:

A$ = B$.... But in C++ the things doesn't seem to be that easy...

I guess there is some runtime library or may be... I should to write code for that...
Well... What do I do?...
If someone has some code sample to do that... I will apretiate...

Thanks...


0
Comment
Question by:Marsc
6 Comments
 
LVL 23

Accepted Solution

by:
chensu earned 60 total points
ID: 2556858
char *pszStr1 = "abc";

char achStr2[32];

strcpy(achStr2, pszStr1);

You may also use the Windows API function lstrcpy.
0
 
LVL 9

Expert Comment

by:jasonclarke
ID: 2557247
You could also use the standard string class to simplify things.

i.e.

#include <string>
using namespace std;

....
string str = FunctionReturningChars();

then str contains a copy of the string, and you can do assignment with C++ strings as you can with your VB strings, e.g.:

string a, b;
a = b;
0
 
LVL 1

Expert Comment

by:Ernest022699
ID: 2559085
chensu is correct if the maximum possible size of the string is known at compile time.  A cleaner way to do the task is to malloc exactly enough memory and then do the copy (remembering to call free later, of course).
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 23

Expert Comment

by:chensu
ID: 2559379
Right.

char *pszStr1 = "abc";

char *pszStr2 = new char[strlen(pszStr1) + sizeof(char)];

strcpy(pszStr2, pszStr1);

....

delete []pszStr2;
0
 
LVL 1

Author Comment

by:Marsc
ID: 2563137
Adjusted points to 60
0
 
LVL 1

Author Comment

by:Marsc
ID: 2563139
Thank you very much again...
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Errors will happen. It is a fact of life for the programmer. How and when errors are detected have a great impact on quality and cost of a product. It is better to detect errors at compile time, when possible and practical. Errors that make their wa…
Introduction This article is a continuation of the C/C++ Visual Studio Express debugger series. Part 1 provided a quick start guide in using the debugger. Part 2 focused on additional topics in breakpoints. As your assignments become a little more …
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now