c++ - How to initialize a dynamic array of pointers to an object? -

class leg { public:   leg (const char* const s  ,  const char* const e  , const double d) : startcity (s), endcity (e), distance (d) {}   friend void outputleg( ostream&  , const leg& ) ;  private:   const char* const startcity  ;   const char* const endcity  ;   const double distance; };   class route { public:  /* include 2 public constructors --  (1) 1 create simple route consisting of 1 leg, first constructor's parameter should const reference leg object.*/    route ( const leg& ) : arrayholder( new const leg* [1]  ), arraysize( 1 ), r_distance( leg.distance )  {}   //(2) create new route adding leg end of existing route.  private:    const leg** const arrayholder;//save dynamically-sized array of leg*s const leg** const.   const int arraysize;//save size of leg* array const int .   const double r_distance;//store distance of route const double, computed sum of distances of legs. }; 

i use clarification on doing in first constructor. how correctly save pointer of passed leg object?

currently getting 'in constructor 'route::route(const leg&)': error: expected primary-expression before '.' token'

your error when trying access leg.distance. if distance static member of leg, need access leg::distance. want create one-leg route, seems distance member variable, , need specify parameter name in function definition:

route (const leg& l) : arrayholder( new const leg* (&l)),                        arraysize(1),                        r_distance(l.distance) {}