string tokenizer

[savinki]

how can I do this?? can someone help me

char * abc = "as,df,ert:we,rt,yu:ee,rr,tt";

Class x
{
char * a,*b,*c;
}

vector<x> vtr;

I want to extract data from abc like,

while(there is a ":")
{
x.a= as;
x.b=df;
x.c=ert;

vtr.push_back(x);
}

[Ancient Dragon]

Here is the c++ way of doing that

#include<iostream>
#include <string>
#include <vector>
#include <sstream>
using namespace std;

class X
{
public:
    string a;
    string b;
    string c;
};

int main()
{
    string abc = "as,df,ert:we,rt,yu:ee,rr,tt";
    vector<X> vtr;
    X xx;
    size_t pos;
    while( (pos = abc.find(':')) != string::npos)
    {
        string s = abc.substr(0,pos);
        abc = abc.substr(pos+1);
        stringstream str(s);
        getline(str,xx.a,',');
        getline(str,xx.b,',');
        getline(str,xx.c);
        vtr.push_back(xx);
    }
    return 0;
}

If you are looking for a C solution then post your question in the C board.

[Radical Edward]

> Here is the c++ way of doing that
Two things:

1. Your code isn't quite right. It ignores the last set of strings.
2. If you're going to do it the C++ way, let the class do all of the work:

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

class X {
  std::vector<std::vector<std::string> > _parts;
public:
  X(const std::string& src);
  const int size() const;
  const std::vector<std::string>& operator[](int i) const;
};

X::X(const std::string& src)
{
  std::string::size_type begin = 0;
  std::string::size_type end;

  do {
    end = src.find(':', begin);

    std::istringstream iss(src.substr(begin, end - begin));
    std::string input;

    _parts.resize(_parts.size() + 1);

    while (std::getline(iss, input, ','))
      _parts.back().push_back(input);

    begin = end;
  } while (begin++ != std::string::npos);
}

const int X::size() const
{
  return _parts.size();
}

const std::vector<std::string>& X::operator[](int i) const
{
  return _parts.at(i);
}

int main()
{
  X x("as,df,ert:we,rt,yu:ee,rr,tt");

  for (int i = 0; i < x.size(); ++i) {
    for (int j = 0; j < x[i].size(); ++j)
      std::cout << x[i][j] << ' ';
    std::cout << '\n';
  }
}