c++ - Storing an array in a separate class file -

i coding ludum dare right , trying make separate class give me array return type of function. have array set up, can't figure out how make return type array can use in main function. how go returning array , setting variable in main.cpp array?

here couple of examples, each own advantages:

#include <iostream> // c++11 #include <array> #include <vector>  void myvectorfunc1(std::vector<int>& data) {     (unsigned = 0; < data.size(); ++i)         data[i] = 9;      data.push_back(1);     data.push_back(2);     data.push_back(3); }  std::vector<int> myvectorfunc2(void) {     std::vector<int> data;     data.push_back(1);     data.push_back(2);     data.push_back(3);     return data; }  /* c++ 11  template<std::size_t s> void myarrayfunc1(std::array<int, s>& arr) {     (auto = arr.begin(); != arr.end(); ++it)         *it = 9; }  std::array<int,5> myarrayfunc2(void) {     std::array<int,5> myarray = { 0, 1, 2, 3, 4 };     return myarray; }  */  int main(int argc, char** argv) {     // method 1: pass vector reference     std::vector<int> myvector1(10, 2);     myvectorfunc1(myvector1);      std::cout << "myvector1: ";     (unsigned = 0; < myvector1.size(); ++i)         std::cout << myvector1[i];     std::cout << std::endl;      // method 2: return vector     std::vector<int> myvector2 = myvectorfunc2();      std::cout << "myvector2: ";     (unsigned = 0; < myvector2.size(); ++i)         std::cout << myvector2[i];     std::cout << std::endl;      /* c++11      // method 3: pass array reference     std::array<int, 3> myarray1;     std::cout << "myarray1: ";     myarrayfunc1(myarray1);     (auto = myarray1.begin(); != myarray1.end(); ++it)         std::cout << *it;     std::cout << std::endl;      // method 4: return array     std::cout << "myarray2: ";     std::array<int,5> myarray2 = myarrayfunc2();     (auto = myarray2.begin(); != myarray2.end(); ++it)         std::cout << *it;     std::cout << std::endl;      */      return 0; }