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Conditions, Logical Expressions, and Selection Control ...

To be able to construct a simple Logical (Boolean)expression to evaluate a given be able to construct a complex Booleanexpression to evaluate a given be able to construct an If-Then-Elsestatementto perform a specific be able to construct an Ifstatement to performa specific be able to construct a series of nested Ifstatementsto perform a specific be able to describe an algorithm walk-through andtell how it is be able to explain the purpose of tracing the execu-tion of Visual Basic be able to test and debug a Visual Basic , LogicalExpressions, andSelection ControlStructuresGoals212|Chapter 6: conditions , Logical Expressions, and Selection Control Structuresstatement 1statement 2statement 3statement 4 Flow ofcontrolFigure controlSo far, the statements in our programs have been executed in the same order in whichwe write them, except when an event occurs. The first statement is executed, then thesecond, and so on. The method call and the event handler, which execute a separatesequence of statements, provide variations of this ordering.

214 | Chapter 6: Conditions, Logical Expressions, and Selection Control Structures 1The name boolean is a tribute to George Boole, a nineteenth-century English mathematician who described a system of logic using variables with just two values, True and False. (See the Background Informa-tion box on page 222.) 6.2 Conditions and Logical Expressions To ask a question in Visual Basic, we don’t ...

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