interesting_facts5.cpp

/**
 * @file interesting_facts5.cpp
 * @brief 构造函数不能是虚函数，而析构函数可以是虚析构函数。
 * 例如：当基类指针指向派生类对象并删除对象时，我们可能希望调用适当的析构函数。如果析构函数不是虚拟的，则只能调用基类析构函数。
 * @author 光城
 * @version v1
 * @date 2019-07-20
 */
#include <iostream>
using namespace std;

class Base {
public:
  Base() { cout << "Constructor: Base" << endl; }
  virtual ~Base() { cout << "Destructor : Base" << endl; }
};

class Derived : public Base {
public:
  Derived() { cout << "Constructor: Derived" << endl; }
  ~Derived() { cout << "Destructor : Derived" << endl; }
};

int main() {
  Base *Var = new Derived();
  delete Var;
  return 0;
}