Solved

Reading Binary data

Posted on 2006-06-23
2
275 Views
Last Modified: 2010-04-01
I have a file of binary 1s and 0s that I want to read in chunks of size 64, for example read the 1st 64 bits into an integer array of size 64, proccess it and then read the next 64 and so on until the end of file.
How would I do this, I couldn't find a function that reads integer data from file, I tried using the function get() and cast the returned value but it gave me an array of 48s and 49s which are the ASCIIs of 1s and 0s.

Thanks in advance.
0
Comment
Question by:JessyEzzy
[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 9

Expert Comment

by:DrAske
ID: 16970755
here is an idea ..

when you read the data using *getline* function ..then add if statement inside the for loop ..
for(int i =0; i<size; i++){
if(array[i] == '1')
   // process it
else
 // when it is not '1' do whatever you want ..
}
0
 
LVL 16

Accepted Solution

by:
imladris earned 80 total points
ID: 16970760
Since you are getting 48's and 49's it would appear that you have a file full of ASCII ones and zeroes. If my guess is correct then the file can be opened up with notepad, and you will see a bunch of 1's and 0's.

If so, then the file is actually a text file. One simple way to get this into an integer array might be to read each character, and then convert it to an integer in the next array element. Something like:

char bc;
int barray[64];
for(int i=0; i<64; ++i)
{   bc<<cin;
    barray[i]=(bc-'0');
}

Each text one or zero is read into a character. It is then converted to an integer by subtracting the character '0' (decimal 48) from it.
0

Featured Post

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Quicksort a dynamic deque 33 79
Arduino EDI - Programming language 3 117
How can i compile this github project?? 2 99
Bitwise and to sum elements 2 17
  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
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.

730 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