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C-Selection - ECE 175 Introductory C for Engineers...

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ECE 175: Introductory C for Engineers Selection Structures: if and switch Statements
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ECE 175: Introductory C for Engineers - Selection Structures: if and switch Statements Control structures Control the flow of execution in a program C control structures Enables combining of individual instructions into a single logical unit The logical unit has one entry point and one exit point Three kinds of control structures Sequence, selection, and repetition Sequence A compound statement written as a group of statements bracketed by { and } So far, we have been seeing only this kind Choose alternative statements by testing the value of a variable Such statements are called "conditional" statements Establishes a criterion for either executing or skipping a group of statements 2
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ECE 175: Introductory C for Engineers - Selection Structures: if and switch Statements Relational and equality operators Most conditions we employ will be of the following form Relational and equality operators 3 variable operator variable_or_constant Operator Meaning Type < less than relational > greater than relational <= less than or equal to relational >= greater than or equal to relational == equal to equality != not equal to equality
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