Message-ID: <3008F4AA.35F7@linetap.com>
From: nebo <nebo AT linetap DOT com>
Organization: neboland
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: Reading Lines from .txt files
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Date: Thu, 16 Jul 1998 08:05:22 GMT
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NNTP-Posting-Date: Thu, 16 Jul 1998 04:05:22 EDT
To: djgpp AT delorie DOT com
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Jorge Ivan Meza Martinez wrote:
> 
> Hello to everyone,
> 
> I don't know if my question fits here but I hope,
> 
> I need to read lines from an ascii file, I use something like this:
> 
> #include <iostream.h>
> #include <fstream.h>
> 
> char linea[70];
> ifstream archivo_entrada ( filename );
> if ( archivo_entrada.fail () ) { cerr << "fallo en archivo_entrada " <<
> filename << endl; return ( false );  }
> while ( !archivo_entrada.eof () )
>     {
>      archivo_entrada.getline ( linea, sizeof ( linea ) -1 );
>      /** asegura que la cadena tenga fin */
>      linea [76] = '\0';
>      cout << linea << endl;
>      }
> archivo_entrada.close ();
> 
> I open a ifstream and read lines with getline method but the problem is the
> length of the line, getline reads a const number of bytes, in this case
> (70)-1; but what if I don't know how many bytes I want to read, worse than
> that, if the line has more that (70)-1 the program dies.
> 
> How do you do things like this ?
> How is the best "DJGPP way" ?

	getline() will only read until the delimeter is reached, or
	the number of bytes is read, or an EOF.
try.. 
	char linea[257];
	archivo_entrada.getline (linea, sizeof(linea), '\n');
-- 



        Nb
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