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

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TIMEX/ SINCLAIR,~coo zx-e1 IPROGRAMMINGTIPS & TRICKSby Edward PageARCsoft PublishersWOODSBORO, MARYLAND
Page 3: IMEX/ SJ,NCLAIRODO zx-B'IRDGRAMMING
Page 7 and 8: PrefaceThe Sinclair ZX-81 and Timex
Page 9 and 10: Text on Text19 Create a Quiz 3620 K
Page 11 and 12: Money Matters67 Money Grows68 Shopp
Page 13 and 14: IntroductionThere is a great need f
Page 15 and 16: error, or other error, occurs, go b
Page 17: slight modifications to program lin
Page 20 and 21: 1 Coin TossHere's a handy way to se
Page 22 and 23: 80 PRINT"*********"90 PRINT95 GOTO
Page 24 and 25: stance: I WENT TO THE STORE comes o
Page 26 and 27: 9 Mystery CluesWant to create your
Page 28 and 29: 600 PRINT.610 PRINT "**************
Page 30 and 31: Program Listing10 LET N=f,J20 PRINT
Page 32 and 33: After that, it's back to line 10 fo
Page 34 and 35: 830 to 870. Depending upon the valu
Page 37 and 38: Text On Text
Page 39 and 40: 20 Killing TimeSometimes, it may se
Page 41 and 42: Program Listing10 FOR L=f.J TO 255
Page 43 and 44: You can add users to this program b
Page 45 and 46: zero is entered, the computer will
Page 47 and 48: 160 PRINT S;n SECONDS HAVE ELAPSEDn
Page 49 and 50: A PLURAL NOUN = ?BOXESA VERB = ?HOL
Page 51 and 52: Program Listing10 RAND20 LET Z$=•
Page 53: 410 INPUT D420 CLS430 IF D=D(R} THE
Page 57 and 58:
37 Gee Whiz I: Smart AdderThese six
Page 59 and 60:
Program Listing10 CLS20 LET X=lOO*R
Page 61:
Program Listing10 CLS20 CLEAR30 LET
Page 65 and 66:
43 Memory TesterMost everybody can
Page 67 and 68:
100 PRINT •BACKWARD, IT IS •;R1
Page 69 and 70:
48 PercentagesUsually it's more con
Page 71 and 72:
Line 30 says that 5 + 2 is greater
Page 73 and 74:
50 LET M=N/L60 IF M=INT M THEN LET
Page 75 and 76:
54 ReciprocalsKey in any number. Th
Page 77 and 78:
Lines 40 to 70 select the highest a
Page 79 and 80:
60 Percent to DecimalChecking, inte
Page 81 and 82:
Sample Run51 YES 4649 NO 54YESNO42
Page 83 and 84:
Sample RunCOUNTING0: 8l: l 02: 143:
Page 85:
80 NEXT A90 PRINT ·Low NUMBER IS
Page 88 and 89:
67 Money GrowsThis section of the b
Page 90 and 91:
140 INPUT M150 PRINT M160 PRINT nPR
Page 92 and 93:
50 NEXT L60 PRINT100 PRINT "PURCHAS
Page 94 and 95:
40 PRINT·"ORIGINAL AMOUNT$= n50 IN
Page 96 and 97:
Program Listing10 LET T=Jfn.20 PRIN
Page 98 and 99:
110 INPUT H120 PRINT H130 LET S=O.O
Page 100 and 101:
Note that 'the screen goes blank wh
Page 103:
Graphics
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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