Solved

Readinf file and parsing

Posted on 2003-11-29
1
244 Views
Last Modified: 2010-04-02
Hi!
I am trying to read the file below and store into array.
Each number is between 1 – 80 and number of line will be between 1 – 10,000.
Also, is it good idea to use array since this file might contains 10,000 of line?

Ex)
3:  1,  4,  5, 10, 14, 15, 16, 19, 22, 25, 26, 37, 38, 42, 50, 56, 62, 70, 74, 80
1:  6, 12, 27, 28, 29, 30, 33, 36, 37, 39, 41, 43, 46, 49, 56, 57, 59, 62, 73, 80
….
….
….
0
Comment
Question by:dkim18
1 Comment
 
LVL 3

Accepted Solution

by:
gkatz earned 100 total points
ID: 9843680
depending on the file size it may not be a good idea to use a regular array.  Arrays are allocated in the stack and the stack has a limitted size.  Instead it may be a good idea to create the array at run time.  This has the added advantage that you can specify the size as a variable instead of a constant (once you create it, the size is still constant) and it is created on the heap instead of on the stack which means that you have a lot larger storage size.  To do so use the new operator.

double* myArray = new double[arraySize];

afte that you can use the array just like any standard array.  Just don't forget to deallocate it when you are done.

delete [] myArray;

-gkatz
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

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

Introduction This article is the first in a series of articles about the C/C++ Visual Studio Express debugger.  It provides a quick start guide in using the debugger. Part 2 focuses on additional topics in breakpoints.  Lastly, Part 3 focuses on th…
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
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++.

772 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