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Re: [CPROG] Extern funktion

Peter Gylling <sslug@sslug> skrev:

> Når dette kompileres med gcc fås output af tjek til tjek=5, men 
> hvorfor det?

Fordi func_check() funktionen får sin egen kopi af den øverførte
værdi. Det er forvirrende at give de to variable samme navn, for det
er i praksis to forskellige variable - som blot har samme værdi i det
øjeblik funktionen kaldes.



Dit spørgsmål svarer faktisk til at undre sig over at i beholder
værdien 5 i følgende eksempel:

int main()
{
        int i;
        int j;

        i = 5;
        j = i;
        ++j;
        printf("i = %d\n", i);
        return 0;
}

Her modsvarer j den lokale tjek variabel i dit eksempel.

-- 
Regards, Anders                         If a Microsoft product
(address is valid)                      fails, who do you sue?

 
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