To: djgpp AT delorie DOT com
Subject: output to printer with streams
Message-ID: <19970209.041157.12278.0.john.k.murphy@juno.com>
References: <Pine DOT SUN DOT 3 DOT 91 DOT 970209082816 DOT 405G-100000 AT is>
From: john DOT k DOT murphy AT juno DOT com (John K Murphy)
Date: Sun, 09 Feb 1997 05:16:55 EST

Well thanks for the replies showing me how to output to the printer using
fprintf(), it worked: I had just never tried it that way.  Here is the
way I found and unsuccessfully attempted before:  Can this method, using
the streams, ever work? (it was in a tutorial on C++)  Everything works
in this program except for opening and outputting to the printer.

                               // Chapter 1 - Program 4 - FSTREAM.CPP
#include <iostream.h>
#include <fstream.h>
#include <process.h>

void main()
{
ifstream infile;
ofstream outfile;
ofstream printer;
char filename[20];

   cout << "Enter the desired file to copy ----> ";

   cin >> filename;

   infile.open(filename, ios::nocreate | ios::in);		// "|
ios::in" had to be added by me 
   if (!infile) {
      cout << "Input file cannot be opened.\n";
      exit(1);
   }

   outfile.open("copy");
   if (!outfile) {
      cout << "Output file cannot be opened.\n";
      exit(1);
   }

   printer.open("LPT1", ios::nocreate | ios::out);
   if (!printer) {
      cout << "There is a problem with the printer.\n";
      exit(1);
   }

   cout << "All three files have been opened.\n";

char one_char;

   printer << "This is the beginning of the printed copy.\n\n";

   while (infile.get(one_char)) {
      outfile.put(one_char);
      printer.put(one_char);
   }

   printer << "\n\nThis is the end of the printed copy.\n";

   infile.close();
   outfile.close();
   printer.close();
}



// Result of execution
//
// (The input file is copied to the file named "COPY")
// (The input file is printed on the printer