c++之析构函数

#include<iostream>
using namespace std;
class A
{
   public:
    A(){cout<<"A construction ";}//构造函数
    ~A(){cout<<"A Destruction ";}//析构函数
};
int main() {
 cout<<"构造a ";
  A a;
  cout<<"构造pb ";
  A *pb=new A;
  cout<<"-------------- ";
  {
   cout<<"构造c ";
  A c;//生命周期在大括号内
  cout<<"析构c ";
  }
  cout<<"------------------ ";
  cout<<"析构pb ";
  delete pb;
  cout<<"析构a ";
  return 0;
return 0;}

结果：

构造a
A construction
构造pb
A construction
--------------
构造c
A construction
析构c
A Destruction
------------------
析构pb
A Destruction
析构a
A Destruction

--------------------------------
Process exited after 0.1611 seconds
请按任意键继续. . .