printing command.

This is a discussion on printing command. within the C++ Programming forums, part of the General Programming Boards category; can anybody tell me the command to print out a variable straight to the printer please. p.s (not 'print screen' ...

  1. #1
    dac
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    printing command.

    can anybody tell me the command to print out a variable straight to the printer please.
    p.s (not 'print screen' or 'screen dumps')

    thanks.

  2. #2
    and the hat of wrongness Salem's Avatar
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    Which OS/Compiler?
    What type of printer, and what sort of port is it plugged into?
    What type of program - console or GUI ?

  3. #3
    Bond sunnypalsingh's Avatar
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    Quote Originally Posted by dac
    can anybody tell me the command to print out a variable straight to the printer please.
    p.s (not 'print screen' or 'screen dumps')

    thanks.
    I came across this
    http://support.microsoft.com/default...kb;en-us;23976

  4. #4
    dac
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    im using dev-C++, this is for my AS level coursework project! 'village hall'. have XP at home but NT at school, so needs to work on both.
    using the DOS box.
    i just need a command which can print my variable text to a printer (reciept).

  5. #5
    Master of Puppets rwmarsh's Avatar
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    I am trying to do the same thing. I have tried those tips and nothing happens. These are the codes that I have tried
    Code:
    #include <stdio.h>
    #include <iostream>
    
    using namespace std;
    
    int main()
    {
        FILE *stream;
    
        stream = fopen("LPT1", "w");
        fprintf(stream, "a line of text\n");
        fclose(stream);
        cin.get();
        return 0;
    }

    Code:
    #include <iostream>
    #include <fstream>
    
    using namespace std;
    
    int main()
    {
        ofstream printer("lpt1");
        printer << "a line of text\f" << flush;
        cin.get();
        return 0;
    }
    none of these work for me. no errors just nothing prints. I know the printer is working right because I tested it.

    Using DEV-C++ under Windows XP
    With an HP Deskjet Printer on lpt1

  6. #6
    Frequently Quite Prolix dwks's Avatar
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    none of these work for me. no errors just nothing prints. I know the printer is working right because I tested it.
    Does this work?
    Code:
    C:\>echo Hello, World! > lpt1
    If so, you can just redirect the output of your program from the command line:
    Code:
    C:\>program > lpt1
    BTW, some compilers define a stream called stdprn.
    Code:
    fprintf(stdprn, "a line of text\n");
    dwk

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