C++ class member function pointers

This prints -7:

#include <stdio.h>

struct Moo
{
    int func () const { return -value; }
    int value;
};

int main ()
{
    Moo m; m.value = 7;

    int (Moo::*funcPtr) () const = &Moo::func;
    printf ("%d\n", (m.*funcPtr) ());
    return 0;
}

Gotta love the "int (Moo::*) ()" syntax - pointer to any member function of class "Moo" as long as it returns an "int" an accepts nothing.

And of course, "(m.*funcPtr) ()", which invokes the pointed-to function with "m" as "this".