reading in strings - problem with "\n"

[Zach Wegner]

If I was calling it 1000's of times a second, I'd probably do that. It consumes no time really, so I just keep it simple.

[Richard Allbert]

This is why I hate using c++ sometimes

Code: Select all

#include <iostream>
#include <string>
#include <fstream>

using namespace std;


int main()
{
  
  ifstream inifile;
  string inputline;

  inifile.open ("test.txt",ifstream::in);

  if (!inifile)
 {
         cout<<"\n ERROR Opening ini file";
          exit(1);
 }

    while(!inifile.eof())
    {
        getline(inifile, inputline);
        cout<<"\n inputline = "<<inputline;
    }

  inifile.close();

    return 0;
}

Output?? "ERROR Opening ini file"

It's taken me longer messing about with searching the net and using my "c++ STL reference" trying to open a file using c++ than I managed to write my tourney manger in c.

And still no open file.

Richard

[mathmoi]

This is why I hate using c++ sometimes

Code: Select all

#include <iostream>
#include <string>
#include <fstream>

using namespace std;


int main()
{
  
  ifstream inifile;
  string inputline;

  inifile.open ("test.txt",ifstream::in);

  if (!inifile)
 {
         cout<<"\n ERROR Opening ini file";
          exit(1);
 }

    while(!inifile.eof())
    {
        getline(inifile, inputline);
        cout<<"\n inputline = "<<inputline;
    }

  inifile.close();

    return 0;
}

Output?? "ERROR Opening ini file"

It's taken me longer messing about with searching the net and using my "c++ STL reference" trying to open a file using c++ than I managed to write my tourney manger in c.

And still no open file.

Richard

Hi Richard, I don't think that's C++ fault

I compiled and ran your code and it work fine. Maybe your test.txt file is not in the current directory of the application?

[Richard Allbert]

This is why I hate using c++ sometimes

Code: Select all

#include <iostream>
#include <string>
#include <fstream>

using namespace std;


int main()
{
  
  ifstream inifile;
  string inputline;

  inifile.open ("test.txt",ifstream::in);

  if (!inifile)
 {
         cout<<"\n ERROR Opening ini file";
          exit(1);
 }

    while(!inifile.eof())
    {
        getline(inifile, inputline);
        cout<<"\n inputline = "<<inputline;
    }

  inifile.close();

    return 0;
}

Output?? "ERROR Opening ini file"

It's taken me longer messing about with searching the net and using my "c++ STL reference" trying to open a file using c++ than I managed to write my tourney manger in c.

And still no open file.

Richard

Hi Richard, I don't think that's C++ fault

I compiled and ran your code and it work fine. Maybe your test.txt file is not in the current directory of the application?

It isn't c++ fault - I compiled it on my laptop with no problems.



But, it won't work on my desktop, which is new and has Vista, another of my hates. This has happened with a few of my programs.

A copy of XP is on order....

Richard

[plattyaj]

This is why I hate using c++ sometimes

Code: Select all

  ifstream inifile;
  string inputline;

  inifile.open ("test.txt",ifstream::in);

  if (!inifile)
 {
         cout<<"\n ERROR Opening ini file";
          exit(1);
 }

Output?? "ERROR Opening ini file"

Perhaps I'm missing something but I don't see how this could ever work. inifile is constructed (default constructor) and then you call the open method. So far so good. But I don't see that if (!inifile) can work. You should use inifile.good () here to test for the file.

Andy.

[Richard Allbert]

Agreed, but I was using "The C++ Standard Library" as reference... I assumed it would be correct.

[plattyaj]

Agreed, but I was using "The C++ Standard Library" as reference... I assumed it would be correct.

Actually my bad anyway because, doh!:oops: , ! is an operator that returns if failbit or badbit is set.

Although it would be interesting to test good and just confirm it still fails.

You should probably also query errno / GetLastError and see just why it failed.

Andy.

[Richard Allbert]

Well, after all that something else odd.

I converted the program to using strings and vectors - which means no predefining of array sizes, and no "\n" problems

What is odd is that the program compiles & runs on my XP laptop, my work XP laptop, but compiles and fails to run properly on my vista home computer.

Any reason for that?

May well be an irrelevant question .. a new copy of XP should be arriving in the post today, and will replace Vista (even though I line the MS pockets a little more)

Regards

Richard

[Aleks Peshkov]

Probably it is too late, but I know owners of Vista Bussiness can legally downgrade to XP Professional Edition without charge.

[Richard Allbert]

Yes I heard that, but I have the home version that came preintalled

It'll soon be gone....