#include <iostream>
#include <cstdlib>

using namespace std;

class A
{
private:
    string name;

public:
    A()
    {
        cout << "A()" << endl;
        name = "no name";
    }
    A(const string &name)
    {
        cout << "A(const string &name)" << endl;
        this->name = name;
        cout << "name: " << name << endl;
    }
    ~A()
    {
        cout << name << "~A()" << endl;
    }
};

int main()
{
    // A *p = new A[5];
    // delete[] p;
    // A *p2 = new A[4]{A("a"), A("b"), A("c"), A("d")};
    // delete[] p2; // 释放数组中成员对象时，从高(地址)到低(地址)依次释放

    A *a = new A("abc");
    free(a); // 只是放指针指向的堆空间，不会调用对象的析构函数

    char *a2 = (char *)malloc(sizeof(A));
    delete a2; // 可以删除简单的 void* 指针

    return 0;
}