Reading data from text (Again!)

[Beagle]

Hi folks,

I'm just learning C++ (using Borland C++ Builder) and I am having difficulty reading data from a text file created in Excel. I am trying to read the data into vectors which I can then use in a model that I am building.

The problem is that I get no output to the console application. The code that I am using is as follows:

#include <vcl.h>
#pragma hdrstop
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#pragma argsused

using namespace std;

int main(int argc, char* argv[])
{
// Opening the file
ifstream file_in("data.txt");
const int max_char = 15,// Characters expected in header line
header_lines = 1; // Header lines to skip

// Ignore the header lines
for(int j = 0; j < header_lines; ++j)
file_in.ignore(max_char, '\n');

// Set up vectors for each column of data
vector<int> date;
vector<float> maxchl,
sst;

while(!file_to_read.eof()) {
//Set up temporary variables
int dt;
float chl,tmp;

file_in >> dt >>chl >> tmp;

date.push_back(dt);
maxchl.push_back(chl);
sst.push_back(tmp);

}

// Print all the volts read
cout << "\nDate:\n";
for(vector<int>::size_type j = 0; j < date.size(); ++j)
cout << date[j] << '\n';

cout << "\nMaxChl:\n";
for(vector<float>::size_type j = 0; j < maxchl.size(); ++j)
cout << maxchl[j] << '\n';

cout << "\nSST:\n";
for(vector<float>::size_type j = 0; j < sst.size(); ++j)
cout << sst[j] << '\n';

//Pause until a char is entered
char r;
cin >> r;

return 0;
}

Any help would be greatfully appreciated.

[Nick Evan]

You're not checking if the file was opened successfully, so my guess is that something goes wrong with that.

[Beagle]

Problem solved, Thank you. It turns out that the data file had to be in the Debug_build folder before it could be found.
(Also there were a couple of other minor bugs that I should have noticed).