Turbo Prolog

In addition to the version of Turbo Prolog you are using, the logon message shows you
the configuration for Turbo Prolog on your computer.
Now press the space bar and the Turbo Prolog main menu and four system windows
will appear as shown in Figure 2-2.
Figure 2-2 The Main Menu and the Four System Windows
The Main Menu shows you the commands and pull-down menus available. You select
an item on a menu by pressing the associated highlighted capital letter or by first
moving the highlighted bar using the arrow keys, and then pressing lB. The use of
each window is described throughout this chapter.
The bottom line of the screen contains a status message describing the use of the
function or cursor keys. The meaning of these keys changes depending on what you
are doing with the system at a given time: tracing, editing, or running a program, etc.
ENTERING YOUR FIRST
TURBO PROLOG PROGRAM
Consider the following introductory Turbo Prolog program. We'll be using it to illustrate
how to create, run, and edit Turbo Prolog programs.
predicates
hello
goal hello.
clauses
hello:makewindow(1,7,7,"My
first program",L;,Sb,lO,22),
nl,write(" Please type your name "),
cursor(L;,S),
readln(Name),nl,
write(" Welcome ",Name).
Select the Edit option either by moving the cursor with the arrow keys until it is over
the word Edit and then pressing IB, or by simply pressing CD. The screen should now
look like Figure 2-3.
8 Turbo Prolog Owner's Handbook