?
Solved

Problem with getline function reading from file

Posted on 2003-11-06
2
Medium Priority
?
1,149 Views
Last Modified: 2010-04-02
Here is the problem.  When I execute the code contained in the zip file at http://www.theotron5000.com/help.zip (my personal website) the text file is not parsed properly.  I use a series of nested loops to read in to a series of integers and character array variables (see source).  The parsing works properly after the first line; however, the first line is not read in entirely properly.

For instance, for the text files included in the .zip archive, the first two lines of text input are:

1,6,Uno Mas,1,iiii,1,jjjj,2,kkkk,,,,,,,,,,,,,,,,,1,mmmm
2,7,Jackson,2,iiii,4,jjjj,5,kkkk,,,,,,,,,,,,,,,,,6,mmmm


These result in the output of:

1,6,Uno Mas,1,,1,jjjj,2,kkkk,0,,0,,0,,0,,0,,0,,0,,0,,1,mmmm
2,7,Jackson,2,iiii,4,jjjj,5,kkkk,0,,0,,0,,0,,0,,0,,0,,0,,6,mmmm

NOTE: in the above output, the strin 'iiii' is missing from immediately after the '1' following 'Uno Mas'.  However, in the second line that string appears correctly.  Also, the text file being read is NationalReps.txt, the others may be ignored.

Why is this occurring?

Thanks for the help,
Theo Peterson
theo@iastate.edu
0
Comment
Question by:theotron5000
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 15

Accepted Solution

by:
efn earned 1500 total points
ID: 9697374
Here are the key lines:

char na_temp[12][256];

for(i = 0; i < 150; i++)
{
natFile.getline(na_temp[i],256,',');

As soon as i > 11, this writes outside the bounds of the array.

--efn
0
 

Author Comment

by:theotron5000
ID: 9698234
I am a moron.  Thanks for pointing out the obvious error efn.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Often, when implementing a feature, you won't know how certain events should be handled at the point where they occur and you'd rather defer to the user of your function or class. For example, a XML parser will extract a tag from the source code, wh…
Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question