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Feb 4th, 2009
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How does it happens:cannot read file?

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Hi,guys,
I am new to C++,and recently I practice to read a file with visual studio 9.0,but it turns out that it cannot find the very file!
C++ Syntax (Toggle Plain Text)
  1.  
  2. #include<iostream>
  3. #include<fstream>
  4. #include<string>
  5. #include<iomanip>
  6. #include<cstdlib>
  7. #include<vector>
  8. using namespace std;
  9. //using namespace stdext;
  10.  
  11. int main()
  12. {
  13. 	ifstream inClientFile("Dic.dat",ios::in);
  14.  
  15. 	if(!inClientFile)
  16. 	{
  17. 		cerr<<"File could not be opened"<<endl;
  18. 		exit(1);
  19. 	}
  20. ...

I ensure that the file "Dic.dat" do exist in the same file of the project,but the program only display the message "File could not be opened".
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gshock2006 is offline Offline
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Re: How does it happens:cannot read file?

program can not find the file. Maybe program and file are not in the same directory . Put the full path to the file
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galin is offline Offline
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Re: How does it happens:cannot read file?

if the file "Dic.dat" is in the same directory as your source-files, your program should work fine. Are you sure that you didn't make a typo?
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Nick Evan is offline Offline
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Re: How does it happens:cannot read file?

C++ Syntax (Toggle Plain Text)
  1. if(!inClientFile)
Please do not use this method, it is so wrong. You would be better using the following
C++ Syntax (Toggle Plain Text)
  1. if(!inClientFile.good())
Chris
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Re: How does it happens:cannot read file?

I am sure the "dic.dat" is in the same directory with the source file,
moreover, I tried the expression
if(!inClientFile.good())
but it didn't seem to work.
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Re: How does it happens:cannot read file?

How "doesn't it work" ? Does it compile?
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Re: How does it happens:cannot read file?

it can be complied, but just display the message which means it cannot find the dat file,i suppose.
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Re: How does it happens:cannot read file?

Click to Expand / Collapse  Quote originally posted by gshock2006 ...
I am sure the "dic.dat" is in the same directory with the source file,
moreover, I tried the expression
if(!inClientFile.good())
but it didn't seem to work.
Lets say you are compiling with VC++ then your source code isn't in the same location as the debug or release exectuable, which means nore will "Dict.dat" be, this means you will need to move your Dic.dat file into the debug/release folders.

Chris
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Re: How does it happens:cannot read file?

Click to Expand / Collapse  Quote originally posted by Freaky_Chris ...
Lets say you are compiling with VC++ then your source code isn't in the same location as the debug or release exectuable, which means nore will "Dict.dat" be, this means you will need to move your Dic.dat file into the debug/release folders.

Chris
I tried that,but it didn't work,either. I also have to specify the very path of the dic.dat, it failed ,too.
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Re: How does it happens:cannot read file?

It worked for me without any problems.
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