How to pair/multimap <int, pointer to a function>?

[acppdummy]

Thank you everyone! Following Lindley's suggestions I changed the code to

class myclass {

multimap<int, mem_fun_t<void, myclass > > mm_fn;
...

void afunction();
...

void anotherfunction(int anint){
       mm_fn.insert(pair<int, mem_fun_t<void, myclass > >(anint, mem_fun(&myclass::afunction)));
}

}

Now the compiler does not complain but I am not sure if this is legal or will work as intended (please see paragraph below).

What I would like to do is to build a multimap at run time. In the beginning the program reads in a file telling it which integer points to which member function. One integer may point to one or more member functions. A multimap is built according to the file content. After that the program receives integer input and calls the corresponding member function(s) in the multimap. (I haven't got to this part - not sure if I am on the right track yet.)

Please help. Thanks!