C08 Answer

void printArrayDouble( double arr[], int size )
{
  const int N = 5;
  int j;
  
  for ( j=0; j<size; j++ )
  {
    if ( j%N == N-1 )
      printf("%8.4lf\n", arr[j] );
    else
      printf("%8.4lf ", arr[j] );
  }
}