Re: Stdprn in GCC

Re: Stdprn in GCC

[David]

John Carter wrote:

>If you want it to come out (directly) /dev/lp0 (the line printer port) 
>just open that and fire away.
>
>Either that stuff it in a file and invoke "lpr fileName" at a later stage.
>
>You can also pipe either stdout to "lpr" or fork and pipe to lpr.
>
>A good reference source if the Linux Documentation Project (ask google) 
>and in particular the Linux Programmers Guide.
>  
>
>  
>
I searched google and haven't came up with anything yet, tried putting /dev/lp0
in there and piping it to lpr. Just get errors about it.


> page = 0;     line = 1;     do_heading( argc[1] );     while( fgets( 
> buffer, 256, fp ) != NULL )     {         if( line % 55 == 0 )        
>      do_heading( argc[1] );         fprintf( stdprn, "%4d:\t%s", 
> line++, buffer );     }     fprintf( stdprn, "\f" );     fclose(fp); 
>     return 0; } /* Start function */ void do_heading( char *filename ) 
> {     page++;     if( page > 1)         fprintf( stdprn, "\f");    
>  fprintf( stdprn, "Page: %d, %s\n\n", page, filename ); }

Re: Stdprn in GCC

[John Carter]

On Tue, 22 Oct 2002, David wrote:

Hint 1: Clip out a small piece of code you having a problem with and send 
it and the error message you are having difficulty with to the group. 
Makes it a lot easy to give a good answer.

You could do things like...
FILE * stdprn;
main() {
 stdprn = fopen( "/dev/lp0", "w");

And it will head for the line printeer port on your machine.

If you want it spooled or sent to a remote printer you have to be more 
sophisticated.

You may have to chmod o+rwx /dev/lp0 for the above simplistic trick to 
work.

-- 


John Carter                             Phone : (64)(3) 358 6639
Tait Electronics                        Fax   : (64)(3) 359 4632
PO Box 1645 Christchurch                Email : john.carter@tait.co.nz
New Zealand

Good Ideas:
Ruby                 - http://www.ruby-lang-org - The best of perl,python,scheme without the pain.
Valgrind             - http://developer.kde.org/~sewardj/ - memory debugger for x86-GNU/Linux
Free your books      - http://www.bookcrossing.com

Re: Stdprn in GCC

[bjorn rohde jensen]

Hi David,

  In Ansi C you would probably mostly use the
printf family of functions to perform output
and the scanf family to perform input.

Yours sincererly,

Bjorn

Re: Stdprn in GCC

[John Carter]

On Tue, 22 Oct 2002, David wrote:

>     Starting to learn C Programming all over again in Linux this time.
> 
> The problem is that most books are for Windows/Dos also.
> 
> 'stdprn'   is not contained in stdio.h in GCC.

If you want it to come out (directly) /dev/lp0 (the line printer port) 
just open that and fire away.

Either that stuff it in a file and invoke "lpr fileName" at a later stage.

You can also pipe either stdout to "lpr" or fork and pipe to lpr.

A good reference source if the Linux Documentation Project (ask google) 
and in particular the Linux Programmers Guide.

-- 


John Carter                             Phone : (64)(3) 358 6639
Tait Electronics                        Fax   : (64)(3) 359 4632
PO Box 1645 Christchurch                Email : john.carter@tait.co.nz
New Zealand

Good Ideas:
Ruby                 - http://www.ruby-lang-org - The best of perl,python,scheme without the pain.
Valgrind             - http://developer.kde.org/~sewardj/ - memory debugger for x86-GNU/Linux
Free your books      - http://www.bookcrossing.com

Stdprn in GCC

[David]

Hello,

    Starting to learn C Programming all over again in Linux this time.

The problem is that most books are for Windows/Dos also.

'stdprn'   is not contained in stdio.h in GCC.

Is it in another library, is there an equivilant library function to use?

If not, how do you send a file to the printer with GCC?

This is stumping me and found no help on Google.

Dave