Splitting of string

Question

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C++: How to split a string?

Hi friends,i need to split a string containing comma seperated values and have to store each value to a variable to use further in the program.I have my code as following : but i am getting error in my code :

string myString = ........// i am getting the string from a function
string::iterator it = myString .begin();
while ( it != myString .end() )
 {
      if ( *it == ',' ) 
         {
           string element =*it++; //i can't do such type of conversion.but then how can 
                                    i get each value ?
           if(element.empty())
             {
             }
         } 
 }

See the answers to this question instead of implementing it again: http://stackoverflow.com/questions/236129/c-how-to-split-a-string — Naveen, May 04 '11 at 10:44
@Naveen: and more precisely, Feruccio's excellent answer http://stackoverflow.com/questions/236129/c-how-to-split-a-string/236234#236234 --> tokenize using iterators is cheap! — Matthieu M., May 04 '11 at 12:02

score 4 · Answer 1 · answered May 04 '11 at 10:40

I would recommend using some available library as the boost string utilities http://www.boost.org/doc/libs/1_46_1/doc/html/string_algo.html

If you need to implement it manually, I would not use iterators, but rather std::string::find to obtain the start and end positions of each one of the elements and then std::string::substr.

score 1 · Accepted Answer · edited May 04 '11 at 11:59

1

You can simply do as following

#include <iostream>
#include <sstream>
#include <string>

std::string String = "Your,String,is,here";
char Separator = ',';

std::istringstream StrStream(String);
std::string Token;

while(std::getline(StrStream, Token, Separator))
{
  std::cout << Token << "\n";
}

edited May 04 '11 at 11:59

Matthieu M.

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answered May 04 '11 at 11:05

sarat

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score 0 · Answer 3 · edited May 23 '17 at 12:19

0

Previously answered here,

C++ ostream out manipulation

I do think there must be even more elegant solutions around here on SO, but this one at least includes unit tests :)

edited May 23 '17 at 12:19

Community

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answered May 04 '11 at 10:44

sehe

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Splitting of string

3 Answers3