Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Appending strings onto a string

Posted on 2004-10-18
5
Medium Priority
?
251 Views
Last Modified: 2010-04-01
I am trying to do the following:
If there is a match, I need to append a string onto an existing one.
How is the implementation done using std strings?

std::string fscript;

for .....
{
   //if match
    add on a string and " " to end of existing string...

0
Comment
Question by:jewee
5 Comments
 
LVL 5

Accepted Solution

by:
allmer earned 1000 total points
ID: 12338570
The simplest way would be to
simply add the new string to fscript in the loop:
for (..do whatever..) {
    ....
    fscript += yourHit;
}

Also look here:
http://www.experts-exchange.com/Programming/Programming_Languages/Cplusplus/Q_20980456.html
if there are speed, performence issues attached.
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 200 total points
ID: 12338917
Apart from using the operator '+=', 'std::string' also has a member function 'append()' which pretty much does what the name suggests.
0
 
LVL 55

Assisted Solution

by:Jaime Olivares
Jaime Olivares earned 200 total points
ID: 12339483
0
 
LVL 39

Expert Comment

by:itsmeandnobodyelse
ID: 12340208
>> add on a string and " " to end of existing string...

maybe it's better to add space character first ...

   std::string fscript, word;
 
   while ( !end )
   {
      ...
      word = nextWord();
      if ( match )
      {
           fscript += ' ';
           fscript += word;
      }
    }

Note, you cannot not do it by one statement

    fscript += (' ' + word);   // compile error

as std::string has no operator + (..) but only operator += (..) .

Regards, Alex





0
 
LVL 1

Assisted Solution

by:gugario
gugario earned 600 total points
ID: 12340440
Alex, your solution is good... but you should be able to do
     fscript += " " + word;

I just tried in g++ on my pc and it worked like that.  

Weird, eh?

Gustavo.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

IntroductionThis article is the second in a three part article series on the Visual Studio 2008 Debugger.  It provides tips in setting and using breakpoints. If not familiar with this debugger, you can find a basic introduction in the EE article loc…
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
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.

971 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