C (itan Re: Ligo asxeto ...)

[Vasilis Vasaitis]

On Sun, Sep 26, 1999 at 01:08:11PM +0000, D.A.Glynos wrote:
> 
> On Sat, 25 Sep 1999, Vasilis Vasaitis wrote:
> > On Sat, Sep 25, 1999 at 02:28:07AM +0300, Giorgos Keramidas wrote:
> > > 
> > > Pzzzzzttt ! xasate... next please...
> > > 
> > > Ama exeis dnlwsei: int *p;
> > > Tote to p++ einai isodunamo me: p += sizeof(int);
> > 
> >   Ðæææææôôô! ×Üóáôå! Ï åðüìåíïò...
> > 
> >   ¶ìá Ý÷åéò äçëþóåé `int *p;', ôüôå ôï p++ åßíáé éóïäýíáìï ìå ôï `p += 1',
> > êáé ôåëéêÜ ôï p èá áðïêôÞóåé ôçí ôéìÞ ðïõ åß÷å áñ÷éêÜ ç ðáñÜóôáóç `p + 1'.
> > ÖõóéêÜ îÝñù üôé áðëÜ îÝ÷áóåò üôé Ý÷ïõìå íá êÜíïõìå ìå áñéèìçôéêÞ äåéêôþí êáé
> > åß÷åò óôï ìõáëü óïõ êÜôé óáí `p = (int *) ((int) p + sizeof(int))' (áí êáé
> > äåí ôï óõíåéäçôïðïßçóåò), üìùò ôïõò Üëëïõò ìðïñåß íá ôïõò ìðåñäÝøåéò.
> 
> Vassilh , den katalava kala to argument sou.
> Uponoeis oti to parakatw den tha mas kanei print to noumero 2000 ?
> 
> int main(){
>   int a, b[3], *c;
> 
>   printf("The size of our integers is %i\n",sizeof(a));
>   b[0]=1000;
>   b[1]=2000;
>   b[2]=3000;
>   c=b;
>   printf("The second element of the array is %i\n",*(++c));
>   return;
> };

  Áõôü âåâáßùò êáé èá ôõðþóåé 2000. Ôï ßäéï åðßóçò èá ôõðþóåé áí
áíôéêáôáóôÞóåéò ôï `++c' ìå ôï `c+1' Þ êáé ìå ôï `c+=1'. Áí üìùò ôï
áíôéêáôáóôÞóåéò ìå ôï `c+=sizeof(int)' ðïõ õðïóôÞñéîå ï Ãéþñãïò üôé åßíáé
éóïäýíáìï, ôï áðïôÝëåóìá ðïõ èá ðÜñåéò èá åßíáé ðïëý äéáöïñåôéêü...

-- 
Vasilis Vasaitis
vvas at hal.csd.auth.gr

Nuke them till they glow, then shoot them in the dark.


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