small problem with istringstream and 2d vector

[rajeshkooth]

Hi everyone,
I have troubles with reading floats from a file and writing it into a 2d vector. Basically, I have 3 coordinates (x,y,z) of some points which I want to store in a 2d vector. This is what I have so far:

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

int main(int argc, char *argv[]){

	if (argc != 2){
		cout << "need a file..." << endl;
		return 1;
	}

	int i=1;
	float x,y,z;
	string line;
	vector< vector<float> > basis;
	vector<float> row;
	ifstream fin(argv[1]);
	istringstream inputString(line);

	while(i<4 && getline(fin, line) ){
	        inputString >> x >> y >> z;
		row.push_back(x);
		row.push_back(y);
		row.push_back(z);
		basis.push_back(row);
		row.clear();
		i++;
	}

	for(int l=0; l<3; l++){
	    for(int m=0; m<3; m++){
	      cout << basis[l][m] << " ";
	    }
	    cout << endl;
	}
	return 0;
}

The input file has the following format:
e.g.:

1.33939344  3.498494944  1.33891
8.8484844    12.39398     4.59582111
23.9333       7.7893933      5.2323323
etc.

And this is the result I get printed on the screen:

0 0 5.89483e-39 
0 0 5.89483e-39 
0 0 5.89483e-39

So, it doesn't work. I don't see the mistake. Can anyone help me?

[rajeshkooth]

I solved it. I have to place the line

istringstream inputString(line);

into the while loop. Then everything works fine.

while(i<4 && getline(fin, line) ){
                istringstream inputString(line);
	        inputString >> x >> y >> z;
		row.push_back(x);
		row.push_back(y);
		row.push_back(z);
		basis.push_back(row);
		row.clear();
		i++;
	}