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Re: [CPROG] pointer gymnastik



On Fri, 10 Sep 1999, Thomas M. wrote:

> Hejsa
> 
>  Jeg har en streng på x antal bytes,som "abcdefg..xyzABCDEFG..XYZ123..890"
> Jeg vil gerne finde ud af index'et på et bestemt tegn 'B' f.eks. Problemet
> er at index() returnerer en pointer til tegnet, i stedet for en index ind
> i strengen (som f.eks. at B er nr. 29. tegn i strengen). Hvordan for jeg
> lige omregnet dette til et brugbart index? (bruger det til at indexere med
> ind i strengen igen med chars[indx])

Hmmm, du kan jo sige at offset = indexpointer - &strengarray;??

/Jesper

"Microsoft does have a Year 2000 problem. We're it"
(c) unknown       - Go Linux! http://www.linux.org/

 Jesper Monsted - RIPE: JM42 - sslug@sslug



 
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