test

#include <iostream>

using namespace std;

class Test
{
public:
    Test(){cout << "test con" << endl;}
    ~Test(){cout << "test des" << endl;}
};

class Filesystem
{
public:
    Filesystem(){std::cout << "fs con!" << endl;}
    ~Filesystem(){cout << "fs des!" << endl;}
    int b;
    int a;
    Test t;
};

Filesystem& getFs()
{    
    static Filesystem fs;
    return fs;
}

int main()
{
    Filesystem fs1 = getFs();
    fs1.a += 1;
    std::cout << "a1=" << fs1.a << " addr1=" << &fs1 << " a1=" << &fs1.a << endl;
    
    Filesystem fs2 = getFs();
    //cout << fs1.a << endl;
    fs2.a += 2;
    std::cout << "a2=" << fs2.a << " addr2=" << &fs2 << " a1=" << &fs1.a << endl;

    fs1 = getFs();
    //cout << fs1.a << endl;
    fs1.a += 3;
    std::cout << "a1=" << fs1.a << " addr1=" << &fs1 << " a1=" << &fs1.a << endl;
}

 

 

test con
fs con!
a1=1 addr1=0x7fffffffddf0 a1=0x7fffffffddf4
a2=2 addr2=0x7fffffffdde0 a1=0x7fffffffddf4
a1=3 addr1=0x7fffffffddf0 a1=0x7fffffffddf4
fs des!
test des
fs des!
test des
fs des!
test des