Mike,
 
The Cobol sample used "%15" to include a carriage-return. This is an octal value so the actual decimal equivalent is 13. So, I think it should be "(char) 13" and not "(char)15".
 
I believe "\r" should have worked in C however.
 
HTH
François

________________________________

From: HP-3000 Systems Discussion on behalf of Michael Mileusnich
Sent: Tue 7/8/2008 3:36 PM
To: [log in to unmask]
Subject: Re: [HP3000-L] CREATEPROCESS and other questions...



I am still receiving the same error.

My code is:

//cmd is put on the stack and a command line like LISTFILE is put into it
*(cmdline+strlen(cmdline)+1) = (char)15;
HPCICOMMAND(cmdline, &createstatus);

This should overwrite the null terminator with a carriage return. I have
also tried strcat(cmdline , "\r"), strcat(cmdline, "\r "); and basically
every combination of a space and a carriage return, with a null terminator
and without. I have also tried using (char)15 instead of \r and that didnt
work. I have also tried memsetting the whole buffer to 15 or '\r'.



On Mon, Jul 7, 2008 at 11:20 PM, Walter J. Murray <[log in to unmask]>
wrote:

> Mike asked:
>
> > I am porting a C application over to MPE/iX and I have some questions
> > regarding CREATEPROCESS.  It seems CREATEPROCESS only lets me launch
> an
> > executable program.  What do I need to use if I wanted to STREAM a job
> or
> > run an internal command such as a LISTFILE?  Also, when using
> > CREATEPROCESS,
> > the executable in which I want to launch will only launch if the
> > executable
> > is in the same group as my application.
>
> For an easy way to execute commands from a C program, try the system()
> function.  It calls HPCICOMMAND for you, and you don't have to append a
> carriage-return.
>
> You can even use it to execute a RUN command, so you might not need to
> use CREATEPROCESS.
>
> Here's a sample program.
>
> -----cut here-----
> #include <stdio.h>
> #include <stdlib.h>
> int main(void)
> {
>   int return_value;
>   /* Invoke our favorite text editor */
>   return_value=system("RUN EDITOR.PUB.SYS");
>   if (!return_value)
>      {
>      puts("Everything is fine!");
>      return EXIT_SUCCESS;
>      }
>   else
>      {
>      puts("*** OOPS! ***");
>       return EXIT_FAILURE;
>      }
> }
> -----cut here-----
>
> Walter
>
> Walter J. Murray
>
>
>

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