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uuuTO THE KIDSThis book teaches you how to write programs for the Commodore 64 computer.^^You will learn how to make your own action games, board games and word games. Youmay entertain your friends with challenging games and provide some silly moments at [^jyour parties with short games you invent.Perhaps your record collection or your paper route needs the organization your specialprograms can provide. If you are working on the school yearbook, maybe a program to ^handle the finances or records would be useful.^jYou may help your younger sisters and brothers by writing drill programs for arithmetic ^Jfacts or spelling. Even your own schoolwork in history or foreign language may be madeeasier by programs you write.^How to Use This Book: Do all the examples. Try all the assignments. If you get stuck,first go back and re-read the lesson carefully from the top. You may have overlooked some \^jdetail. After trying hard to get unstuck by yourself, you may go ask a parent or teacherfor help.There are review questions for each lesson. Be sure you can answer them before ^announcing that you have finished the lesson!
nTO THE PARENTSThis book is designed to teach BASIC on the Commodore 64 to youngsters in the range^ from 10 to 14 years old. It gives guidance, explanations, exercises, reviews and "quizzes."_ Some exercises have room for the student to write in answers which you can check later.Answers are provided in the back of the book for program assignments.Your child will probably need some help in getting started and a great deal ofO encouragement at the sticky places. For further guidance, you may wish to read myarticle in CREATIVE COMPUTING, page 168, April 1983.^ Learning to program is not easy because it requires handling some sophisticatedconcepts. It also requires accuracy and attention to detail which are not typical childhoodr*) traits. For these very reasons it is a valuable experience for children. They will be wellrewarded if they can stick with the book long enough to reach the fun projects which are^ possible once a repertoire of commands is built up.'i How to Use This Book: The book is divided into 33 lessons for the kids to do. Each^ lesson is preceded by a NOTES section which you should read. It outlines the things tobe studied, gives some helpful hints and provides questions which you can use verballyr*s (usually at the computer) to see if the skills and concepts have been mastered.O These notes are intended for the parents, but the older students may also profit byreading them. The younger students will probably not read them, and can get all the'' material they need from the lessons themselves. For the youngest children, it may bef-K advisable to read the lesson out loud with them and discuss it before they start work.n9
Page 3 and 4: KIDSAND THECOMMODORE 64
Page 5 and 6: KIDSAND THECOMMODORE 64neoartment o
Page 7 and 8: nTABLE OF CONTENTSAcknowledgements
Page 9: nACKNOWLEDGEMENTS^My sincere thanks
Page 13 and 14: n~ ABOUT PROGRAMMINGThere is a comm
Page 15 and 16: nn INSTRUCTOR NOTES 1 NEW, PRINT, R
Page 17 and 18: COMMAND THE COMPUTERTry this. Type
Page 19 and 20: THE NUMBER ZERO AND THE LETTER "O"T
Page 21 and 22: nINSTRUCTOR NOTES 2COLOR AND THE KE
Page 23 and 24: There are eight colors on the numbe
Page 25 and 26: OTHER COMMANDS IN PRINT STATEMENTSJ
Page 27 and 28: LESSON 3 LIST, BOXES IN MEMORYClear
Page 29: ADDING A LINEYou can add a new line
Page 35 and 36: THE DELETE KEYThe DEL key is your "
Page 37 and 38: INSTRUCTOR NOTES 5 TRICKS WITH PRIN
Page 39 and 40: RULE: The semicolon makes the invis
Page 41 and 42: Assignment 5:1- Write a program whi
Page 43 and 44: LESSON 6THE INPUT COMMANDUse INPUT
Page 45 and 46: YOU WEAR TWO HATS, USER AND PROGRAM
Page 47 and 48: LESSON 7THE LET COMMAND, GLUING STR
Page 49 and 50: GLUING THE STRINGSHere is how to st
Page 51 and 52: LESSON 8THE GOTO COMMAND AND THE ST
Page 53 and 54: A CAN OF SPAGHETTILook at this: 10
Page 55 and 56: Assignment 8:1. Just for practice i
Page 57 and 58: LESSON 9 THE IF COMMANDClear the me
Page 59 and 60: JtTHE "NOT EQUAL" SIGNTwo signs:= m
Page 61 and 62:
INSTRUCTOR NOTES 10 INTRODUCING NUM
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The thing which is put into the box
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MIXTURES IN PRINTYou can print numb
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INSTRUCTOR NOTES 11TAB AND DELAY LO
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HOW BIG A SPACE CAN TAB( ) MAKE?The
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INSTRUCTOR NOTES 12 THE IF COMMAND
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AN IF INSIDE AN IFThe "teenager" pr
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2. Here is another program. What wi
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LESSON 13RANDOM NUMBERS AND THE INT
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ROUNDING OFF NUMBERSPerhaps you kno
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INSTRUCTOR NOTES 14SAVING TO TAPEWe
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The computer automatically turned o
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nnr^nnnnnr^nnLOADING A PROGRAM FROM
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5. We are ready to put in the next
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n INSTRUCTOR NOTES 15 SOME SHORTCUT
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AN INPUT SHORTCUTInstead of10 PRINT
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WHEN TO USE THE COLON SHORTCUTUse t
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But if we write this line in a prog
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LESSON 16 MOVING PICTURESMOVING THE
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Line 40 waits for you to see this b
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LESSON 17FOR-NEXT LOOPSRemember the
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LOOP VARIABLESTo make sure that eac
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^ INSTRUCTOR NOTES 18 DATA, READ, R
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STRANGE RULES1. It doesn't matter w
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MIXTURES OF DATAThe DATA statement
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LESSON 19SOUND EFFECTSTurn up the s
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TONES BY THE BUSHELEnter: 10 REM **
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"TM" stands for "timbre." Timbre is
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INSTRUCTOR NOTES 20NAMES, CLOCKS AN
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cAnytimeyou type, the characters ar
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LESSON 21COLOR GRAPHICSADJUST YOUR
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Add these lines to the above progra
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INSTRUCTOR NOTES 22POKEing GRAPHICS
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Try this: Change the number 83 to a
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We can number the streets and house
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n INSTRUCTOR NOTES 23 SECRET WRITIN
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THE COMPUTER ISIMPATIENTThe compute
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^ INSTRUCTOR NOTES 24 PRETTY PROGRA
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Assignment 24A:1. The delay loop is
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Assignment 24B:1. Write a short pro
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LESSON 25 LOGIC: AND, OR, NOTANOTHE
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THE IF COMMAND TELLS LITTLE WHITE L
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THE LOGIC SIGNSYou can use these si
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LESSON 26 SNIPPING STRINGS: LEFTS,
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CUTTING A PIECE OUT OF THE MIDDLETh
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nnO INSTRUCTOR NOTES 27 SWITCHING N
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MAKING NUMBERS INTO STRINGSRun10 RE
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Assignment 27:1. Write a program wh
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LESSON 28ACTION GAMES AND THE FUNCT
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LOOKING IN THE KEYBOARD'S BOXHere i
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Run it. It puts a white diamond on
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cTHETARGETS ARE HEARTSAdd these lin
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LESSON 29MUSICGo back and review th
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REGISTER ADDRESSES Base address is
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D^ INSTRUCTOR NOTES 30 ARRAYS AND T
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The DIM... command tells the comput
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1 REM *** EIGHT QUEENS ***2 GOTO 10
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Assignment 30:1. Write a program wh
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LESSON 31SPRITES FOR ACTION GRAPHIC
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Then use the CRSR keys to move the
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MANY SPRITES AT ONCEHere are the bo
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WATCH OUT, TWO SPRITES ARE GOING TO
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LESSON 32USER FRIENDLY PROGRAMSTher
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TIE A STRING AROUND THE USER'S FING
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SET TRAPS FOR ERRORSExample: Add th
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LESSON 33DEBUGGING, STOP, CONTTHE S
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Use the PRINT command to look at va
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RESERVED WORDSABSAND ASC ATNCHR$CLR
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ells and whistlesA phrase going bac
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error trapPart of a program which c
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listingA list of all the lines in a
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emarkA comment you make in the prog
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variableA name given to a box in me
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FORMULA TOO COMPLEXYou wrote a stri
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SYNTAXYou "spelled" the line wrong.
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1 REM A4-310 REM*** SMILE***13 POKE
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1 REM A6-210 REM*** FAVORITE***15 P
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~ 40 INPUT C$1 REM A9B-210 REM ***
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^ 1 REM A11A-210 REM !"#$% INSULTS
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1 REM A12B-410 REM *** PICK A CARD
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^ 1 REM A15-210 REM!!! VACATION!!!r
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■1 REMA17B-510 REM*** OPERA SOPRA
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1 REM A22-110 REM *** COLORED BOX *
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1 REM A24B-1r> 10 REM*** SUBROUTINE
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1 REM A26-210 REM*** ANSWERER***12
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1 REM A27-110 REM *** BACKWARD ***1
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441 FOR l=2 TO LEN(A$]442L1$=MID$(F
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INDEX OF TOPICSaddition 59,74ADSR 1
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memory 16, 24-26, 45, 59, 81, 83,11
Page 239:
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