cesatablecontainingacountofthewordsthatappearintheinputfile:
words:=table(0)
whileline:=read()do
line?whiletab(upto(&letters))do
words[tab(many(&letters))]+:=1
Herethedefaultvalueforeachwordis0,asgivenintable(0),and+:=isanaugmentedassignmentoperationusedtoincrementthevalues.Thereareaugmentedassignmentoperationsforallbinaryoperators.
AlistcanbeobtainedfromatableTbythefunctionsort(T,1).Theformofthelistdependsonthevalueofi.Forexample,ifiis3,thelistcontainsalternatekeysandtheircorrespondingvaluesinT.Forexample,
wordlist:=sort(words,3)
whilewrite(pop(wordlist),\":\",pop(wordlist))
writesthewordsandtheircountsfromthetablewords.
5.GraphicsFacilitie
Iconsupportshigh-levelgraphicsfacilities:
Windowscanbeopenedandclosedasdesired.
Textcanbewrittentowindowsinavarietyoftypefacesandsizes,includingproportional-widthfaces.
Charactersfromthekeyboardscanbeprocessedastheyaretyped.
Points,lines,polygons,circles,ares,andsmoothcurvescanbefreelymixedwithtext.
Colorscanbeusedforbothtextandgraphics.
Imagefilescanbereadandwritten.
Formoreinformation,seeReference3.
6.AnExample
Thefollowingprogram,whichproducesaconcordanceofthewordsfromaninputfile,illustratestypicalIconprogrammingtechniques.Althoughnotallthefeaturesinthisprogramaredescribedinprevioussections,thegeneralideashouldbeclear.
globaluses,lineno,width
proceduremain(args)
width:=15#widthofwordfield
uses:=table()
lineno:=0
everytabulate(words())#tabulateallcitations
output()#printthecitations
end
ᴏᴏᴘ.ᴛᴡ 呈現最新的小說章節
#Addlinenumbertocitationsforword
proceduretabulate(word)
\/uses[word]:=set()
insert(uses[word],lineno)
return
end
#Generatewords
procedurewords()
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