Thread: using special filenames for hardware devices eg-"prn" & "con"

I've been testing this program, but it doesn't work iether using "prn", "lpt1", or "con". I'm using windowsXP and Borland compiler. Any explainations?

Code:

// ezprint.cpp
// demonstrates simple output to printer
#include <fstream>                //for file streams
using namespace std;

int main()
   {
   char* s1 = "\nToday's winning number is ";
   int   n1 = 17982;

   ofstream outfile;              //make a file
   outfile.open("PRN");           //open it for printer
//   outfile.open("con");           //open it for console
   outfile << s1 << n1 << endl;   //send data to printer
   outfile << '\x0C';             //formfeed to eject page
   return 0;
   }