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Molim za POMOC(objasnjenje jednog koda).HITNO mi je potrebno

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icon Molim za POMOC(objasnjenje jednog koda).HITNO mi je potrebno20.01.2009. u 12:26 - pre 185 meseci
Imam f-ju za upis matrica preko dvostruko povezanih listi:

Code:
Cvor *upis(Cvor *koren)

   int n,m,i,j;
   int k;
   Cvor *novi,*p,*q,*r; 
   printf("  Broj vrsta matrice   ");
   scanf("%d",&n);
   printf("  Broj kolona matrice  ");
   scanf("%d",&m);
   printf("\n");
   koren=NULL;
   printf("  Elementi matrice\n\n");

               for(i=1;i<=n;i++)  { 
                       for(j=1;j<=m;j++)   {
                                                             printf("Unesi element [%d,%d]=",i,j);
                                                             scanf("%d",&k);
                                                            novi=(Cvor*)malloc(sizeof(Cvor));
                    novi->vrednost=k;
                                                             novi->desno=NULL;
                                                             novi->levo=NULL;

                                                      if(i==1&&j==1){  koren=novi;
                            p=q=r=koren;
                            }
                                                            if(i==1&&j==1)continue;
                                                                                         if((j!=1)&&(i==1)){
                            p->desno=novi;
                            p=p->desno;
                    }
                                                                                if((j==1)&&(i>1)){
                                r->levo=novi;
                                q=r->desno; 
                                r=r->levo;
                                p=r;
                        }                                                                                                                                                                                                                                                                                                                                                                                                                
                                                           if((j!=1)&&(i>1))  { 
                        q->levo=novi; 
                        q=q->desno;
                        p->desno=novi;
                        p=p->desno;
                }
                                                                                                                                                                            

                       }
              }

                 return koren; 
}


e,sad mi nije bas jasno,sta koji pokazivac radi? (to i jeste pitanje)
p-ide desno kroz vrstu;
r-ide kroz kolonu,
a sta radi q?
Molim za pomoc i pojasnjenje kako radi ova f-ja.
Unapred hvala
 
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[es] :: C/C++ programiranje :: Molim za POMOC(objasnjenje jednog koda).HITNO mi je potrebno

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