101 Apple Computer Programming Tips and Tricks

HOME:PRINT CH PRINT "SCORES= INPUT "1 TO 100"; IF G$="X" THEN 2 G=VAL{G$):N=N+ IF G=60 THEN F= P=S/N:M=L+{{HPRINT "AVE PRINT:CLEA :GOTO 20

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APPLE

COMPUTER PRDGRAMMING TIPS & TRICKS by Fred White

ARCsoft Publishers WOODSBORO,MARYLAND

FIRST EDITION FOURTH PRINTING ©

1982 by ARCsoft Publishers, P.O. Box 132, Woodsboro, MD 21798 USA

Printed in the United States of America Reproduction or publication of the contents of this book, in any manner, without express permission of the publisher, is prohibited . No liability is assumed with respect to the use of the information herein . Trademark credits and software copyrights: APPLE is a trademark of Apple Computer, Inc. Programming advice and applications software in this book are copyright 1982 by ARCsoft Publishers. ISBN 0-86668-015-2

Preface The APPLE Computer is one of the world's most popular computer systems. Its lightweight, desktop design and powerful version of the BASIC programming language place it at the forefront of the new wave of personal computers for home, school and office. Anything but a toy, its hardware configuration and system software make it a highly useful tool in the business environment and the classroom as weil as for practical jobs around the home. In fact, the system software is so flexible and versatile that the need for this book became apparent. There are so many computer tasks which can be accomplished with the APPLE system that an introduction to the many techniques is needed. Software programs are what make a computer do what you want. This book is written for those newcomers and beginners, as weil as advanced novices and student programmers, who would like to tap the vast resources available in the APPLE computer package. This book, it is hoped, will guide and instruct and provide insights into the many ways the BASIC language built into the APPLE computer can be put to use. This book is a companion volume to 33 New APPLE Computer Programs for Home, School & Office. -

Fred White

Table of Contents Tip Introduction

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Fun & Games Super Slot-O See Two Dice See Four Dice Secret Message I Secret Message 11 Step Up Box Score Sound Off Say Goodbye, Computer Computer Rating Service Batting Average Mystery Clues 60-Second Timer Math Flasher Sorting Scores Name In A Box Audible Timer I Audible Timer II Traditional Dice Roll Keeping Game Scores Winner's Message Ring The Bell! Question & Answer Timer Original Hi-Lo Game

Page 8

13 14 15 16 17 17 19 20 20 22 23 24 25 25 28 29 30 31 31 32 33 35 36 37 38

26

27

28 29 30 31 32 33 34

35 36 37 38 39 40 41 42 43 44 45 46 47 48

Text On Text Killing Time Number-Error Trapping Word-Error Trapping Y or N Categorizing Look-Up Table Entering: Letter Stop Entering: Zero Stop Keyboard Scanner Character-ASCII Review Character Numbers Memory Peek Search & Order Bubble Sort Simple Screen Clear News Ticker Create A Quiz

Gee Gee Gee Gee Gee Gee

Wh iz Whiz Whiz Whiz Whiz Whiz

Gee Whiz I: Smart Adder 11: Alphabet Spotter 111: Up, Down, Back, Forth IV: Three-Digit Mystery V: Funny Similes VI: Who Is Youngest?

40 40 41 42 43 44 46 47 47 48 49 50 51

52 53 54

55 58 58 59 60 61 62

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Number Crunching Number Reverser I Logic Functions Factoring Standard Deviation Reciprocals Percentages Above & Below A Line Which Is Smallest? Two-Digit Round Off Dump The Integer Random Sam pier Averages Mid-Range Number Wh ich Is Largest? Percent To Decimal Rounding Off Number Reverser 11 Find Highest/Lowest Every 10th Answer Random Numbers: o to 9 Random Numbers: Distribution Random Numbers: Averages Random Numbers: Sort Hi/Lo Number Reverser 111

66 66 68 69 69 70 70 71 72 72 73 74 74 75 76 76 78 78 80 80 81 83 84 85

Business MaUers

73 74 75 76 77 78

Mark Up Percentage Off To Nearest 95R THEN PRINT CHR$(7) :INPUT"TOO HIGH. GUESS AGAIN.";B :GOTO 220 i F B