Re: Offset by 1 in CStdiofile Seek while reading 0xa

From:

"Ben Voigt [C++ MVP]" <rbv@nospam.nospam>

Newsgroups:

microsoft.public.vc.language

Date:

Thu, 8 May 2008 14:40:19 -0500

Message-ID:

<#tPXOLUsIHA.1768@TK2MSFTNGP03.phx.gbl>

Igor Tandetnik wrote:

"Ganga Sridhar" <gangasridhar@abosoftware.com> wrote in message
news:uY1ds3MsIHA.484@TK2MSFTNGP04.phx.gbl

In my VC++ program I am reading a file in text mode using CStdioFile.
I am trying to read the file character by character until I encounter
the token (Decimal 10 / 0xa)
CStdiofile and Seek(nBytes,CFile::current);
where nByte = 1

Now when I try to read the next character after 0xa, I find that the
offset has moved 1 byte extra.
For eg.
BG*test*test2*12345*1326*9150
GS*mytest*test4

Before GS the file contains 0xa (when viewed in hex editor)
Now when I try to read the next character after 0xa , I get 'S'
instead of 'G'

I don't quite follow. After you've read the end-of-line character, the
file pointer is positioned at G. You seek by one byte, so the file
pointer is now positioned at S. Why again do you expect to read G? Why
do you feel you need to seek in the first place?

Are you trying to skip over the LF byte of the CR+LF pair? If you are in
text mode then this is skipped automatically.