Solved

Problem with getline function reading from file

Posted on 2003-11-06
2
1,141 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
2 Comments
 
LVL 15

Accepted Solution

by:
efn earned 500 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

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

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

Unlike C#, C++ doesn't have native support for sealing classes (so they cannot be sub-classed). At the cost of a virtual base class pointer it is possible to implement a pseudo sealing mechanism The trick is to virtually inherit from a base class…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

813 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

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now