❯ nano test.cpp
❯ g++ test.cpp
❯ ./a.out
Main Begins
Widget Number 0 Constructs
Widget Number 1 Constructs
Function Returns
Widget Number 1 Destructs
Widget Number 0 Destructs
Widget Number 2 Constructs
Widget Number 3 Constructs
Function Returns
Widget Number 3 Destructs
Widget Number 2 Destructs
Main Ends
❯ cat test.cpp
#include <iostream>

class Widget {
private:
  int nubmer;
  static int current_number;
public:
  int number;
  Widget(): number(current_number++) {
    std::cout << "Widget Number " << number << " Constructs" << std::endl;
  }
  ~Widget() {
    std::cout << "Widget Number " << number << " Destructs" << std::endl;
  }
};

int Widget::current_number = 0;

int ret() {
  std::cout << "Function Returns" << std::endl;
  return 0;
}

int func(const Widget& w = Widget{}) {
  Widget w_local{};
  return ret();
}

int main() {
  std::cout << "Main Begins" << std::endl;
  func();
  func();
  std::cout << "Main Ends" << std::endl;
  return 0;
}