C++ passing vector as shared_ptr example

 #include <functional>  
 using namespace std;  
 void Test(shared_ptr<vector<int>> v)  
 {  
      vector<int> & r_v = *(v.get());  
      cout << r_v[1];  
 }  
 int main()  
 {  
      shared_ptr<vector<int>> a = make_shared<vector<int>>(std::vector<int>{ 1, 2, 3 });  
      Test(a);  
      getchar();  
      return 0;  
 }