page-1983-101-timex-sinclair-programming-tricks

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80 Screen FullFill your video screen with square dots, startingfrom the upper left, moving down and across to the lowerright. Line 200 is a freeze frame.Program Listing10 CLS100 FOR X=l TO 21 STEP 2110 FOR Y=l TO 21 STEP 2120 PRINT AT X,Y;CHR$ 128130 NEXT Y140 NEXT X200 GOTO 20081 Sine WaveNote that some complex screen art can be createdwith only a few program lines. You will want to refinethese programs to make them even shorter.Program Listing10 CLS20 FOR X=l TO 6330 LET Y=SIN X + 1040 PLOT X,Y50 NEXT X60 GOTO 6082 Hold That PoseThe illusion of motion is important in computergraphics. But, to make a character move, you have to drawit first!Here we have created a friendly little stick man. But,103
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IMEX/ SJ,NCLAIRODO zx-B'IRDGRAMMING
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FIRST EDITIONFIRST PRINTING©1983 b
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TipTable of ContentsPageIntroductio
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Gee Whiz37 Gee Whiz I: Smart Adder
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97 Draw A Line98 Box Message99 Boxe
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The 101 programs in this handbook c
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author's training in writing BASIC-
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Fun & Games
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Program Listing10 RAND100 LET A=INT
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140 IF R
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130 PRINT •BACKWARD:•140 FOR J=
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110 PRINT •PRESS ANY KEY TO PLAY
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12 60-Second TimerA one-minute time
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210 IF A$=•• THEN GOTO 200220 I
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convert those raw numbers to a batt
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The program here has a temporary su
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1 Create a QuizOne of the most fasc
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line 10 for a.word. It is looking f
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program if you. don't get it right
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90 PRINT100 PRINT "ADDRESS";TAB lO;
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160 LET D$(7)=•sEE YOUR ANALYST"1
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32 Sentence WriterPractice your Eng
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160 IF GH THEN LET H=G180 GOTO 2020
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30 PRINT A$;40 GOTO 1036 Question &
Page 55: Gee Whiz
Page 58 and 59: 38 Gee Whiz II:Three-Digit MysteryH
Page 60 and 61: 41 Gee Whiz V: SecondAlphabet Spott
Page 63: Number Crunching
Page 66 and 67: 120 LET R::R+l125 LET W=j130 LET Z=
Page 68 and 69: 10 the computer asks for a number.
Page 70 and 71: Program Listing10 PRINT •WHAT IS
Page 72 and 73: 25 INPUT Z30 IF Z=I THEN GOTO 8035
Page 74 and 75: 70 GOTO 2080 CLS90 PRINT "THE SMALL
Page 76 and 77: 60 CLS70 PRINT "THE FRACTIONAL PORT
Page 78 and 79: 30 INPUT N35 IF N>INT N THEN GOTO 5
Page 80 and 81: Line 20 generates the numbers. Line
Page 82 and 83: Random Numbers:Distr~butionEver won
Page 84 and 85: 110 PRINT "RANDOM NUMBERS TOTAL ";T
Page 87 and 88: Money Matters
Page 89 and 90: Shopper's FriendTake your computer
Page 91 and 92: POST IS BEST BUYPOST UNIT=$0.08KELL
Page 93 and 94: ending in 95 cents. For instance, a
Page 95 and 96: 100 LET D=l-0.0l*P110 LET R=W/D120
Page 97 and 98: 100 IF H>40 THEN GOTO 140110 LET W=
Page 99 and 100: Unit price is total price divided b
Page 101: The computer generates a table of r
Page 106 and 107: having created him on the graphics
Page 108 and 109: demonstration on how to set up a ta
Page 110 and 111: 87 Beautiful Braided RugJust goes t
Page 112 and 113: Program Listing10 LET X=INT(30*RND)
Page 114 and 115: 130 NEXT X140 NEXT Y200 FOR X=g TO
Page 116 and 117: 40 FOR Y~3 TO 950 PLOT 17,Y60 NEXT
Page 118 and 119: 50 INPUT B60 CLS70 PRINT 0 1981 PRO
Page 121: Appendix
Page 124 and 125: FunctionsABS absolute value of a nu
Page 127: Appendix B: Error MessagesThis is a
Page 130: ooks from ARCsoft PublishersFor the
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