Can I pass an array of a class that is within/or is a subcomponent of an array of classes to a function in C++? -

can pass array (contactslonn ..) of class within/or subcomponent of array of classes (chainref) function in c++?

// chainnetwork.cpp void build_contact_map(chain *chain, int num_chains,contact *map) {     //accept 1 of contactslonn, contactslons, contactslatw, contactslate;     }  // chainnetwork.h class vector { public:     double x;     double y;     double z; vector (); // constructor declared. }; inline vector::vector() {     x = 0.0;     y = 0.0;     z = 0.0; }  class contact { public:     int cresid;     double distance;     contact (); // constructor declared. }; inline contact::contact() {     cresid = -1;     distance = 0.0; }   class chainnetwork { public:     struct contact contactslonn[1000][20];     struct contact contactslons[1000][20];     struct contact contactslatw[1000][20];     struct contact contactslate[1000][20]; }   // declarations in chainnetwork.h void build_contact_map(chainnetwork *chain, int num_chains,contact *map); double distance ( vector v1, vector v2 );    // main.cpp main() chainnetwork *chainref;  try {      chainref = new chainnetwork [num_chains];  } catch (std::bad_alloc xa) {      std::cout << "allocation failure\n";      return 1;  }  // 1 generic function call .. seems grow uncontrollably if try use switch(s) build_contact_map(chainref,chains_to_use,chainref[i].contactslonn); build_contact_map(chainref,chains_to_use,chainref[i].contactslons); build_contact_map(chainref,chains_to_use,chainref[i].contactslatw); build_contact_map(chainref,chains_to_use,chainref[i].contactslate); 

note: related results employed simpler structures ints, float, or struct, not array or double index array of class within class.

note2: have made extensive use of functions receiving "vector" correctly, reference or address; how contactslonn ..

contact[1000][20] cannot converted contact*; different types. change build_contact_contact_map() accept contact (*map)[20], or, better yet, use std::vector<std::vector<contact>> instead of raw arrays.