#include <stdio.h>

int funktion(double xy[]){
  double a[16] = {4,5,6};
  xy[0] = a[0];  xy[1] = a[1];  xy[2] = a[2];
  return 0;
}

int main()
{
	double array[16] = {1,2,3};
	funktion(array);
	printf("%f\n%f\n%f\n",array[0],array[1],array[2]);
	return 0;
}