Printer interface

[munawar at vaxb.acs.unt.edu]

Hi,
Please forgive me if this is a wrong BB for this question.
I am just starting on computer science studies.
My question is:
How do you print your screen on your printer.
That is, How do  I print the stuff(output) on the screen on a connected
printer in a specified format.
All the books I read mention very little about printer usage/interface.
If the question is not clear enough please e-mail me.
Thanks in advance.
-Shri
p.s. I used this BB for the question because I
     write my programs in C or C++.