Thread: Reading Data From A File - Error

many thnx to MacGyver & Daved...

Problem: i have a data file (*.txt or *.dat), N rows and 3 columns of data. Don't know the N number!
i want to read all the data from the file and see if the data are read properly.


SOLUTION

Code:

#include <iostream>
#include <fstream>
#include <vector>
#include <conio.h>
using namespace std;

int main()
{
    vector<double> vList;
    double data;
    fstream file;
    file.open("data.txt",  fstream::in | fstream::out);
        
    while(file>>data)
        vList.push_back(data);

    
    cout<<"Row Tot:"<< vList.size();
    cout<<"\nX"<<"\tY"<<"\tZ"<<endl;  
    
    for(int i=0; i< vList.size()/3.; i++)   // 3. : for 3 columns...
    {
        for(int j=0; j<3; j++)
             cout<< vList[(i*3)+j]<< " ";
	cout<<endl;	
    }
    getch();
}