Xref: news2.mv.net comp.os.msdos.djgpp:7855
From: sam AT beavis DOT u-net DOT com (Sam)
Newsgroups: comp.os.msdos.djgpp
Subject: Getc(), putc() and feof() acting very wierdly
Date: Sun, 25 Aug 1996 02:08:32 GMT
Organization: U-NET limited
Lines: 41
Message-ID: <4vockq$ri5@nuntius.u-net.net>
Reply-To: sam AT beavis DOT u-net DOT com
NNTP-Posting-Host: beavis.u-net.com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Hiya, this is my first post to this group, so I'd like to thank DJ
Delorie for writing DJGPP.

Now for my problem. I've written a very simple program to change the
Windows wallpaper by copying one BMP to another. It randomly picks a
BMP and copies it. Normally it works as expected, but a couple of
files only copy the first few K, an 8578 byte file only gets to 1210
bytes. It all exits as normal, and it all looks the most standard C I
can write.

The copying routine is 

void copyfile()
  {
  int count=0;
  while(feof(infile)==0)
    {
    putc(getc(infile), outfile);
    count++;
    }
  printf("\n%d bytes copied!\n", count);
  }

which is about as simple as I can think of. Infile and outfile are
both FILE * s, and are opened and closed with fopen and fclose as mode
"r" and "w".

I also tried while(getc(infile)!=EOF) and got exactly the same
problem.

I hope I'm not being stupid in asking, but this is bizarre to me, I
honestly haven't a clue what it can be.

Thank you for any help,

Sam.

------------------------------------------------------------------------
"Where am I" - Charlie Chuck.                     sam AT beavis DOT u-net DOT com
                             http://www.u-net.com/~beavis/renstimp.htm