多个单例对象，析构顺序模拟

#include <iostream>
#include <unistd.h>
using namespace std;

struct StaticMember
{
public:
    int age = 6;
    StaticMember()
    {
        std::cout << "StaticMember()" << std::endl;
    }

    ~StaticMember()
    {
        std::cout << "~StaticMember()" << std::endl;
    }
};

struct StaticMember2
{
    StaticMember2()
    {
        std::cout << "StaticMember2()" << std::endl;
    }

    ~StaticMember2()
    {
        std::cout << "~StaticMember2()" << std::endl;
    }
};

struct PlainMember
{
    PlainMember()
    {
        std::cout << "PlainMember()" << std::endl;
    }

    ~PlainMember()
    {
        std::cout << "~PlainMember()" << std::endl;
    }
};

struct PlainMember2
{
    PlainMember2()
    {
        std::cout << "PlainMember2()" << std::endl;
    }

    ~PlainMember2()
    {
        std::cout << "~PlainMember2()" << std::endl;
    }
};

struct StaticMember3
{
    StaticMember3()
    {
        std::cout << "StaticMember3()" << std::endl;

    }

    ~StaticMember3()
    {
        std::cout << "~StaticMember3()" << std::endl;
    }
};

class MyClass
{
public:
    static MyClass *GetInstance()
    {
        static MyClass a;
        return &a;
    }

    static StaticMember3*getStatic()
    {
        static  StaticMember3 pl3;
        return &pl3;
    }

    static void print()
    {
        getStatic();
        std::cout << "/* message */" << std::endl;
    }
private:
    MyClass();
    ~MyClass();

public:
    PlainMember2 plainMember2;
    PlainMember plainMember;
    static StaticMember2 staticMember2;
    static StaticMember staticMember;
};

MyClass::MyClass()
{
    std::cout << "MyClass()" << std::endl;
}

MyClass::~MyClass()
{
    print();
    std::cout << "~MyClass()" << std::endl;
    std::cout << "~MyClass():~StaticMember(),age:"  << staticMember.age << std::endl;
}

StaticMember MyClass::staticMember;
StaticMember2 MyClass::staticMember2;

int main(int argc, const char **argv)
{
    // std::cout <<
    MyClass::GetInstance()->staticMember.age ;
    //<< std::endl;
    //std::cout << MyClass::getStatic() << std::endl;
    return 0;
}

备份地址: 【多个单例对象，析构顺序模拟】