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67 Money GrowsThis section of the book includes a number of programsrelating to household money management and tosmall-business applications. This first program showsyou how your money grows when deposited in a savingsaccount at a certain annual interest rate, compoundedmonthly.The program will have the computer ask for the initialamount of principal saved by depositing in the account.Then the annual interest rate and the number of monthsto be displayed. The result of the run is a display of thechanging principal as months pass and interest is addedon.Program Listing10 LET I=Jf20 PRINT nPRINCIPAL = $n;30 INPUT P40 PRINT P50 PRINT nANNUAL INTEREST RATE = n ,•60 INPUT R70 PRINT Rn.80 PRINT nNUMBER OF MONTHS ,90 INPUT M100 PRINT M110 FOR Q=l TO M120 LET I=(P*(O.Ol*R))/12130 LET P=P+I140 PRINT Q;n MONTH= $";P150 NEXT Q160 PRINT170 IF INKEY$=n" THEN GOTO 170180 CLS190 GOTO 1086
Shopper's FriendTake your computer along the next time you goshopping!This program finds the computer asking for certaininformation and then telling you which product brand nameis the best buy.The computer wil ask for the brand name of a product,the quantity in the product package, and the price of thepackage. Then it will ask for the name, quantity and pricefor a second product.After digesting all this information, it will tell you thebrand name of the best-buy product and show you the unitprices for both brand names so you can agree with thecomputer's judgment.For example, suppose you were looking at corn flakesin boxes, one by Post and one by Kellogg. Suppose the Posi:box contained 24 ounces of flakes and was priced on thegrocery shelf at $1.98 while the Kellogg box held 18 ouncesand was priced at $1.59. Which would be the better buybased on unit price per ounce of flakes?Run the data through your TIMEX and you'll find itcomputes the Post corn flakes to be the best buy with a unitprice of 8¢ vs. the Kellogg unit price of 9¢.After completing the computation, the computer asksfor a yes or no answer. Do you have more to be computed?By the way, if the unit prices turn out to be equal, thecomputer will say they are equal. If you want no furthercomputations, it will say thanks and quit.10 PRINT ~SHOPPERS FRIEND~20 FOR L=l TO 1530 PRINT '"*"";40 JN!EXT L50 PRINT100 PRINT ~FIRST BRAND NAME:~110 INPUT X$120 PRINT X$130 PRINT ~QUANTITY~ ~~87
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IMEX/ SJ,NCLAIRODO zx-B'IRDGRAMMING
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FIRST EDITIONFIRST PRINTING©1983 b
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TipTable of ContentsPageIntroductio
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Gee Whiz37 Gee Whiz I: Smart Adder
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97 Draw A Line98 Box Message99 Boxe
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The 101 programs in this handbook c
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author's training in writing BASIC-
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Fun & Games
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Program Listing10 RAND100 LET A=INT
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140 IF R
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130 PRINT •BACKWARD:•140 FOR J=
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110 PRINT •PRESS ANY KEY TO PLAY
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12 60-Second TimerA one-minute time
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210 IF A$=•• 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
Page 38 and 39: 1 Create a QuizOne of the most fasc
Page 40 and 41: line 10 for a.word. It is looking f
Page 42 and 43: program if you. don't get it right
Page 44 and 45: 90 PRINT100 PRINT "ADDRESS";TAB lO;
Page 46 and 47: 160 LET D$(7)=•sEE YOUR ANALYST"1
Page 48 and 49: 32 Sentence WriterPractice your Eng
Page 50 and 51: 160 IF GH THEN LET H=G180 GOTO 2020
Page 52 and 53: 30 PRINT A$;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: Money Matters
Page 91 and 92: POST IS BEST BUYPOST UNIT=$0.08KELL
Page 93 and 94: ending in 95 cents. For instance, a
Page 95 and 96: 100 LET D=l-0.0l*P110 LET R=W/D120
Page 97 and 98: 100 IF H>40 THEN GOTO 140110 LET W=
Page 99 and 100: Unit price is total price divided b
Page 101: The computer generates a table of r
Page 105 and 106: 80 Screen FullFill your video scree
Page 107 and 108: gram lines to draw and seem to move
Page 109 and 110: Program Listing10 CLS100 FOR L=g TO
Page 111 and 112: There are a number of ways to get t
Page 113 and 114: 140 NEXT X200 LET X=INT(63*RND}210
Page 115 and 116: Program Listing10 LET A$=• 1120 F
Page 117 and 118: 100 FOR Y=l5 TO 25 STEP 10110 FOR X
Page 119: 101 Random Bar GraphIf you don't ha
Page 123 and 124: Appendix A:Sinclair BASIC WordsHere
Page 125: StatementsCLEARCLSCONTCOPYDIMDIM $F
Page 129 and 130: ooks from ARCsoft PublishersFor the
Page 132: 101 TIMEX 1000/Sinclair ZX-81Progra
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