Which function header do you prefer?

int foo(x, y, z)
  double *x;
  int y;
  double z;
{
  /* do something */
}

or

int foo(double *x, int y, double z)
{
  /* do something */
}


I notice the first one appeared in 1978's The C Programming Language
book.
The second edition of the book adopted the second one.  The first one
seem more
readable when there are many arguments.