int f(int x) {
  return x+10;
}

int main() {
  int (*fp)(int x);
  fp = &f;
  $print("fp = ", fp, "\n");
  int a = fp(1);
  int b = (*fp)(1);
  int c = (**fp)(1);
  $print("a=", a, "\n");
  $print("b=", b, "\n");
  $print("c=", c, "\n");
}