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

using namespace std;


int main(void)
{
  string s("a\tb\tc\td");
  string::iterator it = s.begin();
  char d = '\t';
  string tmp;
  size_t parts = 4;
  size_t c = 0;
  while(true) {
    if (parts > 0 && c == parts-1) {
      while(it != s.end()) {
        tmp += *it;
        it++;
      }
      cout << tmp << endl;
      break;
    }
    if (it == s.end())  { cout << tmp << endl; break; }
    if (*it != d) tmp += *it;
    else {
        cout << tmp << endl;
        tmp.clear();
        c++;
    }
    it++;
  }

  cout << "---" << endl;

  stringstream ss(s);
  string si;
  parts = 0;
  c = 0;

  while(true)
  {
    if (parts > 0 && c == parts-1) {
      getline(ss, si);
      cout << si << endl;
      break;
    }
    if(!getline(ss, si, '\t')) break;
    cout << si << endl;
    c++;
  }
}