text: // Show example: how to create a vector which contains `a`, `b` and `c`?
  //  - push_back (not initialization)
  //  - pass iterators to the corresponding ctor
  //  - braced initialization
  
  #include <iostream>
  #include <vector>
  
  int main() {
      int a = 1;
      int b = 2;
      int c = 3;
  
      std::vector<int> v;
  
      for (auto& item : v) {
          std::cout << item << std::endl;
      }
  }
  