# include <stdio.h>
# include <stdlib.h>
# include <math.h>

typedef struct
{
       float x;
       float y;
       float z;
}tocke;


double funkcija (tocke*,tocke *);


main ()
{
       FILE *spis;
       tocke broj[8];
       tocke *pt[8];
       double d,dmin;
       int i,j,imin=0,jmin=0;

       for(i=0;i<8;i++)
       {
               pt[i]=&broj[i];
       }


       if((spis=fopen("tocke.txt","r"))==NULL)
                printf("\nPonovi unos--->>>> SPIS NE POSTOJI !!!");

       for(i=1;i<=2;i++)
    {
       while(fgetc(spis)!='\n');
    }
       i=0;
       while(feof(spis)==0)
       {
               fscanf(spis,"%f %f %f",&pt[i]->x,&pt[i]->y,&pt[i]->z);
               i++;
       }

       for (i=0;i<8;i++)
       {
               printf("%f      %f      %f",pt[i]->x,pt[i]->y,pt[i]->z);
               puts("");
       }

       dmin=funkcija(pt[0],pt[1]);
       for(i=0;i<8;i++)
       {
               for (j=i+1;j<8;j++)
               {
                       d=funkcija(pt[i],pt[j]);
                               if (d<dmin)
                               {
                                       dmin=d;
                                       imin=i;
                                       jmin=j;
                               }
               }
       }

       printf("\n\n%lf",d);
       printf("Tocke su: %d %d",imin,jmin);

       return 0;
}


double funkcija(tocke *pt,tocke*pt1)
{
       double d;

       d=sqrt(((pt->x) - (pt1->x))*((pt->x) - (pt1->x)) + ((pt->y) -(pt1->y))*((pt->y) -(pt1->y)) + ((pt->z) - (pt1->z))*((pt->z) - (pt1->z)));
       return d;

}