How to resolve the algorithm Loops/While step by step in the Smalltalk programming language

Published on 12 May 2024 09:40 PM
#Smalltalk

How to resolve the algorithm Loops/While step by step in the Smalltalk programming language

Table of Contents

Problem Statement

Start an integer value at   1024. Loop while it is greater than zero. Print the value (with a newline) and divide it by two each time through the loop.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Loops/While step by step in the Smalltalk programming language

Source code in the smalltalk programming language

[s atEnd] whileFalse: [s next. ...].
[foo notNil] whileTrue: [s next. ...].
[...] doWhile: [ ... someBooleanExpression ].
[...] doUntil: [ ... someBooleanExpression ].
[:exit | ... cold ifTrue:[exit value]. ...] loopWithExit

number := 1024.
[ number > 0 ] whileTrue: 
  [ Transcript print: number; nl.
  number := number // 2 ]

number := 1024.
[ number <= 0 ] whileFalse: 
  [ Transcript print: number; nl.
  number := number // 2 ]

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