如下列代码所示的基类base和公有派生类derived，判断“生成一个派生类的对象时只调用派生类的构造函数”这一说法是否正确：

#include <iostream>
using namespace std;

class base {
public:
    base() {
        cout << "base constructor" << endl;
    }
    ~base() {
        cout << "base destructor" << endl;
    }
};

class derived : public base {
public:
    derived() {
        cout << "derived constructor" << endl;
    }
    ~derived() {
        cout << "derived destructor" << endl;
    }
};