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Control Structures08

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David Millard

A brief presentation on how control structures (such as if/else and loops) can be used to control the behaviour of an algorithm

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Control Structures: Conditionals, If/Else and Loops David Millard (dem@ecs.soton.ac.uk)
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Recap: Algorithms ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Recap: Modularisation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Recap: Building Good Solutions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Control Flow ,[object Object],[object Object],[object Object],[object Object],[object Object]
Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Conditions, Comparison and Logic ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Conditions, Comparison and Logic ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Conditions, Comparison and Logic ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Conditions, Comparison and Logic
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Conditions, Comparison and Logic
If / Else Statements ,[object Object],[object Object],[object Object],[object Object]
If / Else Statements ,[object Object],[object Object],If (Sky == Blue) then go outside and play EndIf
If / Else Statements ,[object Object],[object Object],[object Object],If (Sky == Blue) then go outside and play Else stay in and watch TV EndIf
If / Else Statements ,[object Object],[object Object],[object Object],[object Object],If (Sky == Blue) then go outside and play Else drink coffee stay in and watch TV EndIf
If / Else Statements ,[object Object],[object Object],[object Object],[object Object],[object Object],If (Sky == Blue) then go outside and play Else If (Sky == Black) then go to bed Else drink coffee stay in and watch TV EndIf EndIf
If / Else Statements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],If (Sky == Blue) then If (Birds > 0) then go bird watching Else go outside and play EndIf Else If (Sky == Black) then go to bed Else drink coffee stay in and watch TV EndIf EndIf
Loop Structures ,[object Object],[object Object],[object Object],[object Object]
Loop Structures ,[object Object],[object Object],while (birds > 0) take a photo flap arms End while
Loop Structures ,[object Object],[object Object],[object Object],[object Object],while (birds > 0) take a photo flap arms End while Do blow duck whistle While (birds == 0) Take Photo
Loop Structures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],while (birds > 0) take a photo flap arms End while Do blow duck whistle While (birds == 0) Take Photo For (n = 1 to 10) take photo of sky End for
Nested Loops ,[object Object],[object Object],[object Object],For (n = 1 to 10) Do blow duck whistle While (birds == 0) While (birds > 0) take a photo flap arms End while End for
Nested Loops ,[object Object],[object Object],[object Object],[object Object],For (n = 1 to 10) Do blow duck whistle While (birds == 0) While (birds > 0) If (have camera) take a photo Else watch for a moment EndIf flap arms End while End for
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Control Structures08

  • 1. Control Structures: Conditionals, If/Else and Loops David Millard (dem@ecs.soton.ac.uk)
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