RosettaCodeData/Task/Odd-word-problem/PureBasic/odd-word-problem.basic

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#False = 0
#True = 1
Global *inputPtr.Character
Macro nextChar()
*inputPtr + SizeOf(Character)
EndMacro
Procedure isPunctuation(c.s)
If FindString("!?()[]{},.;:-'" + #DQUOTE$, c)
ProcedureReturn #True
EndIf
ProcedureReturn #False
EndProcedure
Procedure oddWord()
Protected c.c
c = *inputPtr\c
If isPunctuation(Chr(*inputPtr\c))
ProcedureReturn
Else
nextChar()
oddWord()
EndIf
Print(Chr(c))
EndProcedure
Procedure oddWordProblem(inputStream.s)
*inputPtr = @inputStream
Define isOdd = #False
While *inputPtr\c
If isOdd
oddWord()
Else
Repeat
Print(Chr(*inputPtr\c))
nextChar()
Until isPunctuation(Chr(*inputPtr\c))
EndIf
Print(Chr(*inputPtr\c))
isOdd ! 1 ;toggle word indicator
nextChar()
Wend
EndProcedure
Define inputStream.s
If OpenConsole()
Repeat
PrintN(#CRLF$ + #CRLF$ + "Enter a series of words consisting only of English letters (i.e. a-z, A-Z)")
PrintN("and that are separated by a punctuation mark (i.e. !?()[]{},.;:-' or " + #DQUOTE$ + ").")
inputStream = Input()
oddWordProblem(inputStream) ;assume input is correct
Until inputStream = ""
Print(#CRLF$ + #CRLF$ + "Press ENTER to exit"): Input()
CloseConsole()
EndIf