Members Are Built Before the Body and Destroyed After

1#include <iostream>
2using namespace std;
3 
4class Engine {
5public:
6    Engine() { cout << "Engine" << endl; }
7    ~Engine() { cout << "~Engine" << endl; }
8};
9 
10class Wheel {
11public:
12    Wheel() { cout << "Wheel" << endl; }
13    ~Wheel() { cout << "~Wheel" << endl; }
14};
15 
16class Car {
17    Wheel m_wheel;
18    Engine m_engine;
19public:
20    Car() : m_engine(), m_wheel() { cout << "Car" << endl; }
21    ~Car() { cout << "~Car" << endl; }
22};
23 
24int main() {
25    Car c;
26    cout << "driving" << endl;
27    return 0;
28}