Console App Printing using Borland C++ Builder 4.5

Posted on 2002-03-10
Last Modified: 2011-10-03

I need to write to the printer froma Console App.

Previously when I used Turbo C++ the follwing worked

fprintf(stdprn,.....   etc

It doesnt in C++ Builder 4.5

How can I get round this. Any info would be useful..
Question by:tinybear
  • 7
  • 3

Author Comment

ID: 6854360
BTW Im running C++ Builder on Win XP it that is relevant, but I would need it to work in Turbo C++ if possible as that is the compiler used by my college ( they have limited resources)

Expert Comment

ID: 6854761
In a Windows program, you don't have theprinter file already open, so you can do the following:

FILE *stdprn = fopen("LPT1", "wt");
fprintf(stdprn, "Printing Test\n\n");



Author Comment

ID: 6855513
Cheers will give it a go when I get back home.

Author Comment

ID: 6855537

Cant get it to work in Turbo C++

will try it in C++ Builder later


Expert Comment

ID: 6855796
Why not? What's happening?
I tested it here and it works just fine.
Be aware that some printers just start printing when you send a full page or a eject page sinal.

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.


Author Comment

ID: 6855897
I'll get a full list of the errors when I get in to college later but..

The FILE keyword generates errors


Author Comment

ID: 6856133
In Turbo C++ 3.0

When I compile with the FILE *stdprn = fopen("LPT1","wt")

The first error generated is

Cannot Convert 'FILE *' to 'FILE * &[4]'

and then several others.


Accepted Solution

wenderson earned 50 total points
ID: 6858349
What version of Turbo C++ 3.0 are using, DOS or Windows?
The DOS version already has stdprn defined as a global variable, just include stdio.h.
There's no need to open the file, because it's already opened, just do:

#include <stdio.h>
int main()
  fprintf(stdprn, "Teste\n");
  return 0;

I don't remember if the Windows version has a stdprn defined, if not, you must do "FILE *stdprn = fopen("LPT1", "wt");" before you start printing.


Author Comment

ID: 6859738
Yes it is the DOS version (the college really need to update), but I use Borland C+ Builder3 at home, so I need the program to work in both..which is my dilemma.

Maybe I'll just have to compile 2 versions.

Author Comment

ID: 6863750
Please Allocate Points to wenderson

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

706 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now