Bronze Edition Guide - True BASIC

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139 CHAPTER Correcting Errors and Debugging 18 There are three kinds of mistakes you might make when writing a program: (1) improperly used True BASIC statements, (2) errors that occur when a program runs, and (3) “bugs” that prevent your program from working as you intended. True BASIC can help you find many of these errors, and you can learn some tricks to help you find others. Illegal Statements One of the easiest things that True BASIC can find for you is a statement or structure you have used incorrectly. When you attempt to run a program with an illegal statement, True BASIC opens an error window and displays an error message that gives the line and character numbers at which the error was detected. If you double-click on one of the error messages, True BASIC will place the cursor at the offending spot in your program. You can then correct that error and run the program again. Repeat if there are more than one error in the error window. Consider the following program "WRONG": PIRNT “You are about to toss a coin” IF rnd
140 BRONZE Edition Guide The first error shows that an "illegal statement" was encountered at line 1, character 1. A missing "then" keyword was detected in line 2, character 11. Finally, it was seen that there is no "end" statement. If you now double-click on the first line, True BASIC places the editing window cursor at line 1, character 1, or just in front of the word PIRNT. You can now correct this word by double-clicking on it and then retyping it correctly, PRINT. Repeat with the second and third lines in the "Errors" window. PRINT “You are about to toss a coin” IF rnd
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BRONZE Edition Reference Manual Joh
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4 BRONZE Edition Reference Manual 7
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6 BRONZE Edition Reference Manual P
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9 CHAPTER An Introduction to Progra
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11 CHAPTER Why True BASIC? 2 True B
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13 Installing True BASIC and Using
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Using the True BASIC 6.0 Editor Eve
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iii Short cuts The default setting
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UNDO and REDO UNDO can be applied t
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v TOOLBAR In this version of the ed
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that have a habit of making mistake
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ix EXIT THE EDITOR If you wish to e
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xi RIGHT CLICK /SHORTCUT MENU By cl
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xiii 24 (orange) for Numeric variab
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Note: if you are running a program,
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xv • UNSAVE - is a drastic measur
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a list. You may select any of the l
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• CONFIRM QUIT - is a toggle acti
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xxi • MANUALS - will display a se
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xxiii examples that can be copied d
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24 BRONZE Edition Guide It doesn’
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26 BRONZE Edition Guide The PRINT S
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28 BRONZE Edition Guide Making Simp
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30 BRONZE Edition Guide When the pr
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33 CHAPTER Constants, Variables and
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6. Constants, Variables, and Expres
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41 CHAPTER More on Input and Output
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7. More on Input and Output 43 Can
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7. More on Input and Output 45 Here
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47 CHAPTER Loop Structures 8 So far
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8. Loop Structures 49 .5 .70710678
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8. Loop Structures 51 This program
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8. Loop Structures 53 Notice that y
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8. Loop Structures 55 Change the in
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57 CHAPTER Decision Structures 9 So
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9. Decision Structures 59 Even thou
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9. Decision Structures 61 The RANDO
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9. Decision Structures 63 Other Dec
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65 CHAPTER Formatting and Printing
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10. Formatting and Printing Your Pr
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10. Formatting and Printing Your Pr
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71 CHAPTER Editing Hints and Shortc
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11. Editing Hints and Shortcuts 73
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11. Editing Hints and Shortcuts 75
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77 CHAPTER Using and Storing Data 1
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12. Using and Storing Data 79 times
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12. Using and Storing Data 81 Reusi
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12. Using and Storing Data 83 compu
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12. Using and Storing Data 85 —
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12. Using and Storing Data 87 IF re
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Page 110 and 111: 93 CHAPTER Arrays and Matrices 13 P
Page 112 and 113: 13. Arrays and Matrices 95 item$ ha
Page 114 and 115: 13. Arrays and Matrices 97 The DIM
Page 116 and 117: 13. Arrays and Matrices 99 The MAT
Page 118 and 119: 13. Arrays and Matrices 101 Advance
Page 120 and 121: 103 CHAPTER Functions and Subroutin
Page 122 and 123: 14. Functions and Subroutines 105 C
Page 124 and 125: 14. Functions and Subroutines 107 I
Page 126 and 127: 14. Functions and Subroutines 109 I
Page 128 and 129: 14. Functions and Subroutines 111 E
Page 130 and 131: 113 CHAPTER Libraries 15 Subroutine
Page 132 and 133: 15. Libraries 115 DECLARE DEF state
Page 134 and 135: 117 CHAPTER Graphics 16 Using True
Page 136 and 137: 16. Graphics 119 Figure 16.2 - Hori
Page 138 and 139: 16. Graphics 121 You can draw circl
Page 140 and 141: 16. Graphics 123 The table shows th
Page 142 and 143: 16. Graphics 125 LET x = 0 FOR move
Page 144 and 145: 16. Graphics 127 The SHEAR transfor
Page 146 and 147: 16. Graphics 129 LIBRARY “GraphLi
Page 148 and 149: 16. Graphics 131 Programming for Wi
Page 150 and 151: 16. Graphics 133 as push buttons, e
Page 152 and 153: 135 CHAPTER Sound and Music 17 You
Page 154 and 155: 17. Sound and Music 137 F4 F4 G4 E4
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Page 162 and 163: 145 ASCII Character Set APPENDIX A
Page 164 and 165: 147 True BASIC Statements APPENDIX
Page 166 and 167: B. True BASIC Statements 149 The fo
Page 168 and 169: B. True BASIC Statements 151 Except
Page 170 and 171: B. True BASIC Statements 153 CALL S
Page 172 and 173: B. True BASIC Statements 155 on the
Page 174 and 175: B. True BASIC Statements 157 FOR Lo
Page 176 and 177: B. True BASIC Statements 159 all va
Page 178 and 179: B. True BASIC Statements 161 PLAY S
Page 180 and 181: B. True BASIC Statements 163 PROGRA
Page 182 and 183: B. True BASIC Statements 165 SET CO
Page 184 and 185: 167 Built-in Functions APPENDIX C T
Page 186 and 187: C. Built-in Functions 169 String Tr
Page 188 and 189: C. Built-in Functions 171 ANS (defa
Page 190 and 191: C. Built-in Functions 173 string fo
Page 192 and 193: C. Built-in Functions 175 IP Functi
Page 194 and 195: C. Built-in Functions 177 MOD Funct
Page 196 and 197: C. Built-in Functions 179 POSR Func
Page 198 and 199: C. Built-in Functions 181 SIZE Func
Page 200 and 201: C. Built-in Functions 183 UCASE$ Fu
Page 202 and 203: 185 Explanations of Error Messages
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D. Explanations of Error Messages 1
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211 Making Your Own DO Programs APP
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213 Several DO programs are already
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215 APPENDIX PRINT USING Statement
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H. PRINT USING Statement 217 Notice
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H. PRINT USING Statement 219 Floati
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H. PRINT USING Statement 221 s$ PRI
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223 TRUE BASIC File Types APPENDIX
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I. True BASIC File Types 225 Likewi
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I. True BASIC File Types 227 or tra
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I. True BASIC File Types 229 CASE
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I. True BASIC File Types 231 Each R
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I. True BASIC File Types 233 READ #
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I. True BASIC File Types 235 actual
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I. True BASIC File Types 237 As an
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239 BASIC to True BASIC Converter A
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J. Basic to True BASIC Converter 24
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250 BRONZE Edition Guide CALL state
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252 BRONZE Edition Guide user-defin
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254 BRONZE Edition Guide Output Win
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256 BRONZE Edition Guide selecting,
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Bronze Edition Guide - True BASIC

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