Turbo Prolog

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2 A Short Introduction to the Turbo Prolog System This chapter describes the basic operation of the Turbo Prolog system, including how to make a system backup, use the menu system, run a Turbo Prolog program, and create a program file using the Turbo Prolog editor. Chapter 12, the technical reference, gives a complete list of the files supplied on the distribution disk and the files needed when using the Turbo Prolog system. Turbo Prolog comes pre-installed and ready to run on an IBM PC or fully compatible computer. If you aren't satisfied with some of the defaults (such as our choice of colors for the display) they are easy to change using pull-down menus. See page 168. For now, until you're familiar with the system, you can tryout Turbo Prolog as is. THE MAIN MENU Once you have a copy of the system on your working disk and you are in the appropriate directory, type PROLOG. You should see the logon message shown in Figure 2-1. Figure 2-1 The Logon Display 7
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
Page 2: Turbo Prolog Owner's Handbook Copyr
Page 5 and 6: Chapter 4 Tutorial II: A Closer Loo
Page 7 and 8: Dynamic Databases in Turbo Prolog D
Page 9 and 10: fail field_attr field_str filepos f
Page 11 and 12: I 1-2 Sample Diagnostic Display ...
Page 13 and 14: The tutorials cover all aspects of
Page 15 and 16: Prolog is a full-fledged compiler w
Page 17: Turbo Prolog has a built-in pattern
Page 27 and 28: Saving a Window Layout Select Save
Page 29 and 30: The clauses section contains a coll
Page 31: Objects and Relations In Turbo Prol
Page 35: Since Person I and Person2 are both
Page 39 and 40: mother(marilyn,beverly). mother(ala
Page 41 and 42: so that a goal of the form similar_
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Page 45: 1* Program b *1 domains person, hob
Page 48: Program 7 is a complete Turbo Prolo
Page 57: To declare a domain for lists of in
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Use of Fail Turbo Prolog contains a
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Exercise Suppose an average taxpaye
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6 Tutorial IV: Arithmetic, Simple I
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eply(_,_,D) :- D < 0, write("No sol
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and A= -0.756802 tes t2 ( L; , B) .
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DEBUGGING AND TRACING Before a prog
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7 Tutorial V: Seeing Through Turbo
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makewindow( ... ) shiftwindow( ...
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You can change the attribute of the
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A WORD GUESSING GAME USING WINDOWS
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goal 1* Program 32 *1 makewindow(1,
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8 Tutorial VI: Graphics and Sound A
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1 Program 37 1/ predicates inspiral
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98 Turbo Prolog Owner's Handbook
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To access a file, it must first be
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Program 50 uses random to select th
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110 1* Program 51*1 predicates anim
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The other rule for positive will as
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Try the program with the goal route
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track as soon as one solution has b
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* Program 55 */ domains loc = right
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string word ("" , [ 1 ) : -! . stri
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Program 59 makes use of the readkey
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11 Programmer's Guide This chapter
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Reserved Names The following are re
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2. mylist = elementDom* This is a c
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symbol (\) followed by an ASCII cod
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For example, given trace domains li
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save("mydata.dba") the file mydata.
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domains file name, address age sex
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Tail recursion elimination is a tec
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Determinism, Non-determinism and Ho
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• The DOS linker, LlNK.EXE, must
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Compiling and Linking the Modules B
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so that the data segment addressed
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clauses dosver(VERSION): AX=L;8*2
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The Options Menu The Options pull-d
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Save Configuration S saves the curr
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ARITHMETIC FUNCTIONS AND PREDICATES
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• list of the possible flow patte
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date(Year, Month, Day ) (integer,in
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contained inside that window, the v
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less than or greater than zero, a b
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eadchar( CharVariable) (char) : (0)
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storage(StackSize,HeapSize, TrailSi
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f - Reals in fixed decimal notation
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Predicate and Database Section
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SYSTEM liMITS «arithmet
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ASCII Character Set (continued) Spe
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B Error Messages Following is a com
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600 Too many domain names 601 Too m
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C PLINK USE OF THE FILE PLINK.BAT P
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D PROWG.SYS The table below describ
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E Using Turbo Prolog with Turbo Pas
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F Glossary anonymous variable The v
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list A special sort of object consi
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Index A Anonymous Variable, 22-23 A
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p Pascal procedures. calling from T
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SlnBiCI The Organizer For The Compu
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Learn Pascal From The Folks Who Cre
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2VRBO PASCAt EDJ2OR7tDr.BOX It's Al
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NOTES
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NOTES
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NOTES
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NOTES
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NOTES
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Turbo Prolog

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