For C++11:
vector<int> luggage_combo = { 1, 2, 3, 4, 5 };
Original answer:
You would either have to wait for C++0x or use something like Boost.Assign to do that.
e.g.:
#include <boost/assign/std/vector.hpp>
using namespace boost::assign; // bring 'operator+=()' into scope
vector<int> v;
v += 1,2,3,4,5;