Append mode ("a") query

[Zev Sero]

In a previous article chet at uwovax.uwo.ca writes:
   I know I'll be embarrassed because of this, but would someone please
   tell me why program A below, when executed twice contains twenty lines
   (i.e. the 2nd ten lines are inserted before the EOF mark), but program B
   positions its appends after the EOF mark (so that they don't appear when
   the file is typed out)? And what I can do to fix B. This happens on
   Turbo C and Small C (2.2), and I presume on every C compiler.
[followed by example program A which works, and B which doesn't, even
though the relevant code looks identical].

and in article <4992.25d9633c at uwovax.uwo.ca> he writes:

   In message 14089 I noted a problem with the "a" mode. This is to confirm
   that the C compiler on the Unix OS I use (Sun 4.0.1_Export) behaves the
   same way.

Huh?  In UNIX there is no such thing as an EOF marker, so how could
"a" append after the EOF?  I had assumed that your problem only
happened in DOS.

In any case, I compiled your program B with both gcc and cc under
SunOS Release 4.0.3_EXPORT and also under Sun UNIX 4.2 Release
3.5EXPORT  and it works fine in all four versions.
--
	                                Zev Sero  -  zvs at bby.oz.au
Megalomaniacs are simply people who know damn well they can run the universe
better then God or the present governors.	- Abner Doon (Orson S. Card)