Computer Programming Concepts and Visual Basic David I. Schneider

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4.1 RELATIONAL AND LOGICAL OPERATORS A condition is an expression involving relational operators (such as < <strong>and</strong> =) that is either true or false. Conditions also may incorporate logical operators (such as And, Or, <strong>and</strong> Not). The relational operator less than ( > greater than follows alphabetically ≤ = greater than or equal to follows alphabetically or is identical to EXAMPLE 1 Determine whether each of the following conditions is true or false. (a) 1
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Computer Programming Concepts and V
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CONTENTS SECTION 1: PROBLEM SOLVING
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13.3 WEB PAGE PROGRAMMING WITH VBSC
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S E C T I O N 1 PROBLEM SOLVING
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4 Computer Programming Concepts and
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10 Computer Programming Concepts an
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S E C T I O N 2 FUNDAMENTALS OF PRO
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Page 81 and 82: 3.1 SUB PROCEDURES, PART I Structur
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Page 89 and 90: dure by just using the variable in
Page 91 and 92: Call CalculateSum(x, y, s) Call Dis
Page 93 and 94: ■ FORM-LEVEL VARIABLES Visual Bas
Page 95 and 96: 3. In Appendix D, the section “St
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Page 107: FIGURE 3-9 Sample Run for Programmi
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Page 139 and 140: 5.1 DO LOOPS A loop, one of the mos
Page 141 and 142: Note: If a file other than SECRET.T
Page 143 and 144: Private Sub cmdButton_Click() Dim n
Page 145 and 146: Do While there are still data in th
Page 147 and 148: ■ FLAGS A flag is a variable that
Page 149 and 150: Similarly, the statements Do While
Page 151 and 152: Private Sub cmdDisplay_Click() Dim
Page 153 and 154: The body of a For...Next loop can c
Page 155 and 156: correct payment = Round(payment + .
Page 157 and 158: picDisp FIGURE 5-8 Monthly Payment
Page 159 and 160: Call InputData(principal, yearlyRat
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Dim yrs As String, pay As Single, p
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togram of 1994 levels, respectively
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7. Depreciation to a Salvage Value
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6.1 CREATING AND ACCESSING ARRAYS A
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sets aside a portion of memory for
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End Sub [Run, type White Sox into t
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’Determine amount of data to be p
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The range of an array need not just
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3. The two arrays in Example 3 are
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FIGURE 6-5 Flowchart for a Search o
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Private Sub cmdMerge_Click() Dim m
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Sometimes it is also necessary to p
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num(5) = 10 picOutput.Print Triple(
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sales = 0 For depNum = 0 To 4 sales
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If controlName is the name of a con
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■ BUBBLE SORT The bubble sort is
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Houston 3.7 $31,488 67 8 Los Angele
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The Shell sort is illustrated in wh
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Open “SHOEPART.TXT” For Input A
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EXAMPLE 5 In the following program
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last = middle - 1 Case Is < searchC
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dimensions an array of type varType
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SOLUTION: Coding is simplified by u
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■ THE DESIGN OF THE PROGRAM Figur
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Index 1 lblColLab() Caption A Index
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Dim maxCol As Integer ‘Number of
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txtCell(Indx(10, 1)).Text = “Food
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ow = incStartRow ElseIf (row > incS
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3. Rudimentary Translator. Table 6.
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Section 6 Programming Projects 213
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7.1 SEQUENTIAL FILES Throughout thi
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4. After all the data have been rec
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Write #2, nom, yob Else foundFlag =
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(a) Often a large portion of the fi
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Close #1 End Sub [Run, and then cli
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■ CONTROL BREAK PROCESSING Suppos
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and reporting balances—have becom
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to the SetupCheck Sub procedure, wh
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Dim message As String ‘If one of
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A Case Study: Recording Checks and
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cmdRecord.Caption = “&Record This
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(e) Print out the names and phone n
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Note: The first array must be searc
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8.1 USER-DEFINED DATA TYPES Records
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■ RECORDS In this text, we have w
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EXAMPLE 3 The following program pro
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3. Statements of the form picBox.Pr
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The two-step procedure for reading
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SUMMARY 1. A fixed-length string is
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9.1 INTRODUCTION TO GRAPHICS Visual
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(c) The point (-2, 0) is the left-h
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picOutput.Scale (-2, 12)-(12, -2)
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the picture box. The TextWidth meth
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9.2 LINE CHARTS A line chart displa
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Private Sub ShowTitle() ‘Display
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picEnroll.Line (i, female(i))-(i +
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placed before the Scale method is e
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Private Sub DrawData(male() As Sing
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9.4 PIE CHARTS Drawing pie charts r
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EXAMPLE 3 Write a program to draw t
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‘space of 1.75 radii will remain
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2. Figure 9-24 is called a horizont
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S E C T I O N 10 ADDITIONAL CONTROL
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288 Computer Programming Concepts a
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S E C T I O N 11 DATABASE MANAGEMEN
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S E C T I O N 12 OBJECT-ORIENTED PR
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13.1 OLE OLE, which stands for Obje
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Dim objExcel As Object ‘In (Decla
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FIGURE 13-2 Dialog Box for Insertin
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Notice that the document in the OLE
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To access an initial Web page, you
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EXAMPLE 2 The following enhancement
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DownloadComplete Triggered when the
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FIGURE 13-5 Web Page ■ PLACING AC
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FIGURE 13-7 14. Feel free to type i
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SUMMARY 1. OLE, a technology develo
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APPENDIX A ANSI VALUES ANSIValue Ch
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APPENDIX B HOW TO HOW TO: INSTALL,
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4. If you selected Recent, double-c
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3. Press F1. C. Display an ANSI tab
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2. Point to Programs. 3. Point to A
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1. Press F4. or 1. Click on an obje
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3. Click on the down arrow at the r
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B. Remove all breakpoints. 1. Press
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APPENDIX D VISUAL BASIC DEBUGGING T
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can then alter the expression in th
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point. (Pressing F9 is referred to
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2. Press F8, click the command butt
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I N D E X A Access key, 24, 296-297
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I If block, 106-112, 114, 119, 126,
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END-USER LICENSE AGREEMENT FOR MICR
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MISCELLANEOUS If you acquired this
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Computer Programming Concepts and Visual Basic David I. Schneider

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