int LinearSearch(struct arr, int key)
{
  int i;
  for(i=0; i<arr.length; i++)
    {
      if (key == arr.A[i])
        return i;
    }
  return -1;
}

int main()
{
  struct Array arr={{2,3,4,5,6},10,5};

  printf("%d\n", LinearSearch(arr,15));
  Display(arr);

return 0;
}