#include <iostream>
using namespace std;

class Foo {
    int x;
public:
    Foo() : x(0) {
        cout << "Default constructor" << endl;
    }
    Foo(int x) : x(x) {
        cout << "Constructor that takes int" << endl;
    }
    Foo(const Foo& other) : x(other.x) {
        cout << "Copy constructor" << endl;
    }
    Foo& operator = (const Foo& other) {
        cout << "Assignment operator" << endl;
        this->x = other.x;
        return *this;
    }
    ~Foo() {
        cout << "Destructor" << endl;
    }
};

int main() {
    Foo x;
    Foo y(2);
    Foo z(x);
    Foo t = z;
    Foo u;
    u = t;
    return 0;
}