reading a text file table into 2 double arrays

[mshehadeh]

hi
i'm very new to this ( i've been a matlab user for the past 6 yrs so it's very hard for me...)
i need to read a text file looking like:

alpha beta
1 2
3 4

and i need to get an array for the firt col and the 2nd col i don't know the length of the data
plz help

[Philip Nicoletti]

The basic idea would be to use a std::vector, which grows in size automatically.

Here is a small example. Note: instead of two vectors, it would be better to
create a class with two data members and have one vector of that class.

#include <vector>
#include <fstream>

using namespace std;

int main()
{
  vector<int> field1;
  vector<int> field2;
  
  int f1,f2;
  
  ifstream in("your_data.txt");
  
  in.ignore(1000,'\n');  // skip header line
  
  while (in >> f1 >> f2)
  {
    field1.push_back(f1);
    field2.push_back(f2);
  }
  
  
}

[BioPhysEngr]

Note to others reading this thread; see also the C# thread asking the same question: http://www.codeguru.com/forum/showthread.php?t=513577