#include <iostream>

using namespace std;

class Myclass{
private:
    int* datas;
public:
    Myclass(int size){
        datas = new int[size];
    }

    ~Myclass()
    {
        cout<<"析构函数被调用"<<endl;
        delete [] datas;
    }
};

int main()
{
    cout << "Hello World!" << endl;
    //第一次析构函数调用：局部对象作用域结束
    Myclass m1(5);
    Myclass* m2 = new Myclass(10);
    return 0;
}

 

#include <iostream>

using namespace std;

class Myclass{
private:
    int* datas;
public:
    Myclass(int size){
        datas = new int[size];
    }

    ~Myclass()
    {
        cout<<"析构函数被调用"<<endl;
        delete [] datas;
    }
};

int main()
{
    cout << "Hello World!" << endl;
    //第一次析构函数调用：局部对象作用域结束
    Myclass m1(5);
    Myclass* m2 = new Myclass(10);

     //第二次析构函数调用：delete删除内存
    delete m2;
    return 0;
}