What will be the output of the following C++ code?

#include <iostream>
using namespace std;
class Base
{
    public:
    Base ( )
    {
        cout << "1" << endl;
    }
    ~Base ( )
    {
        cout << "2" << endl;
    }
};
class Derived : public Base
{
    public:
    Derived  ( )
    {
        cout << "3" << endl;
    }
    ~Derived ( )
    {
        cout << "4" << endl;
    }    
}; 
int main( )
{
    Derived x;
}