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Date Posted: 08:44:17 04/17/02 Wed
Author: Hjálmtýr
Subject: Re: skil ekki
In reply to: 's message, "skil ekki" on 07:59:26 04/17/02 Wed

>Þegar ég bý til tvö tvíleitartré geri ég eftirfarandi:
>
>ST Tre1(OrdUppl, String);
> for ( ; k != 0; k--)
>Tre1.insert(strOrd);
>
>en samt fæ ég alltaf villuna:
> error C2228: left of '.insert' must have
>class/struct/union type
>
>samt skrifaði ég kóðann af bls. 517 nákvæmlega upp.
>
>Hvert ætti upphafsskilyrðið í for lykkjunni að vera?


Skilgreiningin á tvíleitartrénu er röng. ST klasinn er skilgreindur í bókinni svona:



   template <class Item, class Key>

   class ST 

     { 

      ...

   public:

      ST(int maxN)          // Smiðurinn tekur inn heiltölu

      ...

     };


Þá áttu að skilgreina hlut af þessu tagi á eftirfarandi hátt:


    ST<OrdUppl, String> Tre1(10000);

en ekki


    ST Tre1(OrdUppl, String);


Að vísu er heiltölugildið sem kemur inn í smiðnum ekkert notað í þessari útfærslu á Táknatöflu (þ.e. ST), þannig
að það væri í lagi að taka það út, og hafa smiðinn með engu viðfangi og þá þyrfti ekki að setja einhverja tölu í
skilgreiningunna á tTre1 hlutnum að ofan.

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