Printer Ports...

Can ANYONE please tell me how to write code which determines which printer port is the actual port? I have read every message on here about the ports and all of the links....but I still can't get my code to work...

Code:

#include <stdio.h>
#include <dos.h>

void main(void)
{
 unsigned int far *ptraddr;  /* Pointer to location of Port Addresses */
 unsigned int address;       /* Address of Port */
 int a;

 ptraddr=(unsigned int far *)0x00000408;

 for (a = 0; a < 3; a++)
   {
    address = *ptraddr;
    if (address == 0)
		printf("No port found for LPT%d \n",a+1);
    else
		printf("Address assigned to LPT%d is %Xh\n",a+1,address);
    *ptraddr++;
   }
}

I got that code from a website...but it won't work either..Visual C++ says "Far" is an obsolete keyword...and Borland just won't compile it...anyone?

Ok, i cannot answer your question about the printer port, but i can help about the compilers not compiling that code. You need a 16-bit dos compiler, FAR pointers are obsolete in a 32-bit enviroment so get something like Borland Turbo C++ 3.1, it does compile code with FAR pointers and much more.