Re: reading string from a text file from vc++ without MFC support

On Sat, 16 Jun 2007 23:11:11 -0700, rindam2...@yahoo.com wrote:


OK, I understand that you want to use C 'FILE*'.


The problem is easy. You just need to open thefileusing _tfopen
(_tfopen is the Unicode-aware version of standard C fopen), read text
lines using _fgetts (the Unicode-aware version of standard C fgets),
until you reach end offile(use feof to test it) and close thefile
with fclose.

You read eachfileline into a temporary local buffer (TCHAR array of
maximum specified size) using _fgetts, and then you can store the line
you have just read in the old-style C buffer into a more modern robust
useful CString instance.

<CODE>
    CString fileName = _T("c:\\prova.txt");

    // Open thefileforreadingin text mode
   FILE*file= _tfopen( fileName, _T("rt"));
    // Iffile== NULL ... error

    // Maximum number of characters in a line
    static const int maxLineChars = 200;

    // This will store each line of text
    TCHAR line[ maxLineChars ];

    // Read line by line fromfile
    while ( ! feof(file) )
    {
        // Clear destination buffer
        ::ZeroMemory( line, sizeof(line) );

        // Read the line
        _fgetts( line, maxLineChars,file);

        // Now 'line' contains the line read fromfile.
        // Do your processing.
        // e.g.: You may store the read line into a CString
        CString strLine( line );

        // Process strLine...
        // DoLineProcessing( strLine );
        ...
    }

    // Close thefile
    fclose(file);
   file= NULL; // Avoid dangling references

</CODE>


No problem: 'feof' function and 'while' statement help you here :)

MrAsm