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How does it happens:cannot read file?

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Join Date: Feb 2009

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How does it happens:cannot read file?

Feb 4th, 2009

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!

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
 
#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>
#include<cstdlib>
#include<vector>
using namespace std;
//using namespace stdext;
 
int main()
{
	ifstream inClientFile("Dic.dat",ios::in);
 
	if(!inClientFile)
	{
		cerr<<"File could not be opened"<<endl;
		exit(1);
	}
...
 
#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>
#include<cstdlib>
#include<vector>
using namespace std;
//using namespace stdext;

int main()
{
	ifstream inClientFile("Dic.dat",ios::in);

	if(!inClientFile)
	{
		cerr<<"File could not be opened"<<endl;
		exit(1);
	}
...

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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Re: How does it happens:cannot read file?

Feb 4th, 2009

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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niek_e

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Re: How does it happens:cannot read file?

Feb 4th, 2009

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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Re: How does it happens:cannot read file?

Feb 4th, 2009

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
if(!inClientFile)
if(!inClientFile)

Please do not use this method, it is so wrong. You would be better using the following

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
if(!inClientFile.good())
if(!inClientFile.good())

Chris

Knowledge is power -- But experience is everything

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Re: How does it happens:cannot read file?

Feb 4th, 2009

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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Cenosillicaphobiac

Re: How does it happens:cannot read file?

Feb 4th, 2009

How "doesn't it work" ? Does it compile?

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Re: How does it happens:cannot read file?

Feb 4th, 2009

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?

Feb 4th, 2009

•

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

Knowledge is power -- But experience is everything

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Re: How does it happens:cannot read file?

Feb 4th, 2009

•

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.