addrfunc1.c

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

// Test that taking the address of a member function name produces
// a pointer to member function.
// Contributed by Jason Merrill <[e-mail]>
// Special g++ Options: -fms-extensions
// Build don't link:

struct A { };
int (A::*p)();

struct B {
  int f () { return 0; }
  void g ();
};

void B::g ()
{
  p = (int (A::*)())&f;
}