Getline not reading first line...

[DarthWashington]

Write your question here.

Hello, I am new here and new to C++. I am trying to read around 4,000 lines from a text file, each line holds a number starting at 1 and going around 4,000 but missing a few numbers here and there. For some reason the first line that is read is 2,977 every time I run the program instead of line 1. Any ideas?

Thanks in advance for the help!

#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

int main()
{
    string datastream;

    ifstream myFile ("test.txt");

  if ( myFile.is_open() )
  {
    while ( !myFile.eof() )
    {
        getline(myFile, datastream);
        cout << datastream << endl;
    }
    myFile.close();
  }

    return 0;
}

[LB]

Firstly, your loop is wrong - as it is, the last thing it reads will be garbage. Never loop on eof! Instead, try this:

    while(getline(myFile, datastream))
    {
        cout << datastream << endl;
    }

Secondly, have you tried with a small input file and had the same problem? What does the start of your file look like?

[Garion]

edit.. nvm, not sure what you are doing wrong then.

it seems to work fine for me.

[DarthWashington]

EDIT: I tried it with a new text file with new numbers and it still starts around halfway through the file...

Quick update.... The code works fine for small text files. When I changed my loop per L B's advice, the first line that is displayed is now 2,976 instead of 2,977. I can't figure out what I'm doing wrong here.

I copy/pasted the numbers that are in the text file, would that have something to do with it? Could it be a corrupt file?

#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

int main()
{
    string datastream;

    ifstream myFile ("RawData.txt");

    if ( myFile.is_open() )
    {
    while (getline(myFile, datastream))
    {
        cout << datastream << endl;
    }
    myFile.close();
    }
    else
    {
        cout << "Could not locate file" << endl;
    }

    return 0;
}

Thanks again for the help!

[DarthWashington]

Hey guys, thanks for the quick reply's. I figured out the problem, it turns out it was my screen buffer on the command console was set tto be too small.

[LB]

When in doubt, pipe output to a file ;)