Solved

fstream !!! how to read

Posted on 2000-05-11
5
305 Views
Last Modified: 2010-04-02
I wrote simple program which use fstream to write 480000 integers in file
That part work fine. But I dont know how to read data from that file in int array;
I tryed to use ifstream but I'm not getting my values back;
I'm new to c++ and this subject so if possible give me the code which can open file and read all values inside it


Regards
Vedran
0
Comment
Question by:xtvca
[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
  • 3
  • 2
5 Comments
 
LVL 5

Expert Comment

by:Wyn
ID: 2801557
null
0
 
LVL 5

Accepted Solution

by:
Wyn earned 20 total points
ID: 2801561
Hi xtvca:

You can write it this way:

int main(int argc, char* argv[])
{
      ofstream of("my.dat");
      for(int i=0;i<=48000;i++)
            of<<???<<endl;
      return 0;
}

And read back:
int main(int argc, char* argv[])
{        int dada[48000];
      ifstream if("my.dat");
      for(int i=0;i<48000;i++)
            if>>dada[i];
      return 0;
}

Regards
Eirnava...
0
 

Author Comment

by:xtvca
ID: 2804896
I'll try
Thanks
0
 

Author Comment

by:xtvca
ID: 2836333
sorry for delay

this shold work but it has some problem (in my case)

No mather i found some other way to deal with it

regards
0
 

Author Comment

by:xtvca
ID: 2847545
Comment accepted as answer
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Should CArray be used for a list of pointers in C++? 19 142
Eclipse IDE - Cannot copy/paste from console output 8 377
Create a path if not exists 7 124
max float value 3 72
Errors will happen. It is a fact of life for the programmer. How and when errors are detected have a great impact on quality and cost of a product. It is better to detect errors at compile time, when possible and practical. Errors that make their wa…
  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 …
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
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…

739 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