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

double *proizvod (double *a, double *b, int n) {
  int i;
  double *p;
  if ((p=(double *)malloc(sizeof(double)*n))==NULL) {
    fprintf (stderr, "Greska: neuspesna alokacija memorije.\n");
    exit (EXIT_FAILURE);
  }
  for (i=0;i<n;i++)
    *(p+i)=(*(a+i))*(*(b+i));
  return p;
}

int main () {
  double *a=NULL, *b=NULL, *p=NULL;
  int i, n;
  printf ("Unesite n:\n");
  scanf ("%d", &n);
  if (n<0) {
    fprintf (stderr, "Nedozvoljena vrednost.\n");
    exit (EXIT_FAILURE);
  }
  if ((a=(double *)malloc(n*sizeof(double)))==NULL) {
    fprintf (stderr, "Neuspela alokacija memorije.\n");
    exit (EXIT_FAILURE);
  }
  printf ("Unesite koordinate prvog vektora:\n");
  for (i=0;i<n;i++)
    scanf ("%lf", &a[i]);
  if ((b=(double *)malloc(n*sizeof(double)))==NULL) {
    fprintf (stderr, "Neuspela alokacija memorije.\n");
    exit (EXIT_FAILURE);
  }
  printf ("Unesite koordinate drugog vektora:\n");
  for (i=0;i<n;i++)
    scanf ("%lf", &b[i]);
  p=proizvod(a,b,n);
  printf ("\nRezultujuci vektor:\n");
  for (i=0;i<n;i++)
    printf ("%.2lf ", *(p+i));
  free(a);
  free(b);
  free(p);
  return 0;
}