Path: utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!husc6!think!ames!pasteur!ucbvax!lucy.wellesley.EDU!sshurr
From: sshurr@lucy.wellesley.EDU (Scott)
Newsgroups: comp.os.vms
Subject: C printf and PHOTO
Message-ID: <8801232216.AA06909@ucbvax.Berkeley.EDU>
Date: 21 Jan 88 15:31:44 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 43

We are having the following problem with the PHOTO program running on
VMS 4.5:

I write a C program that does printf's, such as the following:

#include stdio

main()
{
printf("Here is a line followed by two returns.\n\n");
printf("Here is another line.\n");
}

When I run it normally, it does what I would expect, as in:
$ RUN TEST
Here is a line followed by two returns.

Here is another line.
$

But when I start up PHOTO, run the program, and exit PHOTO, I see:
$ TYPE PHOTO.LOG
Here is a line followed by two returns.
Here is another line.

So, where did that second \n go to?  Is there something special I must put
into my c programs to make PHOTO capture their output correctly?  Or is this
a bug in PHOTO itself or in the pseudo-terminal driver it uses?

Just out of curiosity, I tried running this program after doing:
$ SET HOST 0/LOG
With the following result:
$ TYPE SETHOST.LOG
Here is a line followed by two returns.


Here is another line.
That's right, the log had an EXTRA blank line!

Can anyone explain this behavior and/or suggest a solution?
Thanks,
--Scott Shurr
  sshurr@lucy.wellesley.edu