473,761 Members | 4,511 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

ifstream::failb it problem

18 New Member
Hi all,
Im getting an exception in the middle of reading a file and here is my code
Expand|Select|Wrap|Line Numbers
  1. std::ifstream inf;
  2. const int bufSize=1024;
  3. char tbuffer[bufSize];
  4. std::string filex = path; // may be C:\test.txt
  5. const char* stx = &filex[0];
  6. inf.open(stx,ios_base::in|std::ios::binary);
  7. if(!inf.good())
  8. {
  9.     inf.clear();
  10.     inf.close();
  11.     std::cout<<std::endl<<"Cant open file "<<std::endl;
  12.     exit(1);
  13. }
  14. inf.exceptions ( ifstream::eofbit | ifstream::failbit | ifstream::badbit );
  15. try 
  16. {
  17.     while(inf.good())
  18.         {
  19.         inf.getline(tbuffer,bufSize);
  20.         cout<<endl<<tbuffer<<endl;
  21.         ::Sleep(50);
  22.         }
  23.             inf.clear();
  24.         inf.close();
  25.         delete inf;
  26. }
  27. catch(ifstream::failure e)
  28. {
  29.     cout<<endl<<"exception-->file exception"<<e.what()<<endl;
  30.     exit(1);
  31. }
  32.  
This code itself is in a loop and so, Im using the sleep function for some delay for my custom processing.
Please help me out with this. I have no clue whats the problem.

Thanks a lot.

SC
Apr 8 '07 #1
1 5014
weaknessforcats
9,208 Recognized Expert Moderator Expert
Remove this:

inf.exceptions ( ifstream::eofbi t | ifstream::failb it | ifstream::badbi t );

and this:

delete inf;
Apr 8 '07 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

11
37914
by: John | last post by:
Hello all, I am trying to read in lines into a buffer from a file. Normally I would do this very low-level, but I have come to the conclusion I must stop doing everything the hard way. So, I thought I would try <fstream>. The code below causes an infinite loop in the while() statement. Debugging, I see that the buffer just has a 0 in the first position, and nothing else.
2
9002
by: Gunnar | last post by:
Hello, I've just written a CPP program that reads integers from a binary file, and used this code while (my_ifstram.read( (char* ) &number, sizeof(int)) { // do something with number } My question is now, where can I find a manual that describes what the read method does with the ifstream object? I'm sitting here with my Linux/Debian machine, but I have not found any
5
8122
by: Pete H | last post by:
I am trying to use the same ifstream object to open two files. I will eventually want to open many with a loop. The first file opens fine, but the second has a problem. In my test I try to open two .txt files, the first text.txt reads: First seems to work... text2.txt reads:
2
3446
by: Jupiter5F | last post by:
This problem from one of the message boards has got my curiosity going. The task is to read in lines of data from a file where each line contains a name and some integers. We want to output the name and the result of adding the integers. i.e. ~~~~~~~~~~~~~~~~ Frank 3 5 1 9 Jeff 4 9 0 Nancy 2 Ron 1
6
3394
by: Ram Laxman | last post by:
Iam new bie to C++ programming.. I want to write a program which will read the Comma separated values(CSV) file column wise. For example: In a.txt: "TicketNumber","Phone","CarNumber" 10,20,30
1
1434
by: Bernhard Hidding | last post by:
Hi there, I want to read an ASCII file ("magnetfile.dat") consisting of doubles into an array. The ASCII file looks like this: 1.0 1.0 1.0 0.5 2.0 1.0 1.0 0.4 usw. My code:
4
2253
by: jared.oconnell | last post by:
Howdy, I am having a weird problem with ifstream. ifstream img; img.open(im_fn.c_str(),ios::in|ios::binary); char *x = new char; if(!img) { cerr << "Error: problem reading img" << endl; exit(1);
1
13606
by: Robbie Hatley | last post by:
Say I have an ifstream object, like so: #include <iostream> #include <fstream> int main(int, char* Sam) { std::ifstream Bob; Bob.open(Sam); std::string buffer; while (42)
11
13495
by: rory | last post by:
I am reading a binary file and I want to search it for a string. The only problem is that failbit gets set after only a few calls to getline() so it never reaches the end of the file where the string is contained. From reading through posts to this list it seems that failbit gets set if there is a format error whilst reading. Is it bad form to reading binary data into a char array? Is this why my function below doesn't work? void...
0
10136
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
1
9925
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
9811
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
7358
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6640
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5405
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
3913
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
3
3509
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2788
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.