c++ implementation of string split

Question

Possible Duplicates:
C++ split string
How do I tokenize a string in C++?

I'd like to parse a single line of text, which consist of several words separated by blanks. so I need to know the C++ way of split a string by a certain separator. an example line is like below:

aa bb  cc    dd

which means one ore more than one blanks are used as separator in each line of the configuration file. so could any of you can provide some working code to solve my problem? thanks in advance.

@Heandel: Why would you use a regular expression for this? – Björn Pollex May 18 '11 at 08:29 — Björn Pollex, May 18 '11 at 08:29
This is a classic homework problem. DIY. – Blazes May 18 '11 at 08:30 — Blazes, May 18 '11 at 08:30

score 1 · Answer 1 · edited May 18 '11 at 08:35

1

string tmp;  
vector<string> out;  
istringstream is("aa bb   cc   dd");  
while(is >> tmp)  
    out.push_back(tmp);

Try with this code. The vector out should contain the tokenized strings

edited May 18 '11 at 08:35

Konrad Rudolph

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answered May 18 '11 at 08:30

Mayank

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score 0 · Answer 2 · answered May 18 '11 at 08:35

0

you can use strtok function to split strings

int i=0;
int j=0;
char text[] ="aa bb cc   dd";
char *splittedtext[100]; // have 100 element
splittedtext[0] = strtok(text," ");
while(splittedtext[i] != '\0'){
   ++i;
   splittedtext[i] = strtok(NULL," ");
}
for(j=0;splittedtext[j]!='\0';++j)
   printf("%s",splittedtext[j]);

answered May 18 '11 at 08:35

masay

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You can, but please don’t. The question is about C++, not C. – Konrad Rudolph May 18 '11 at 08:36

c++ implementation of string split

2 Answers2