PV913This

#include <iostream>

class Test
{
    static int common;
    int x;
    int* ptr;
    static const int size{42};

public:

    Test() : Test(0) { std::cout << "Default constructor for Test\n"; };
    Test(int pX, int pSize = 433) : x{ pX }, ptr{ new int[10] }{++common; std::cout << "Test constructed for " << this << '\n' << "This is #" << common << " instance of Test\n"; }
    ~Test() { delete[] ptr; std::cout << "Test destructed for " << this << '\n' << "This was #" << common-- << " instance of Test\n"; };
    void setX(int x) { this->x = x; };
    int getX() { return x; };
    int getSize() { return size; };
    bool isEqual(Test* const obj) { return (obj == this); };
    Test& add(int num) { x += num; return *this; };
    Test& sub(int num) { x -= num; return *this; };
    Test& mul(int num) { x *= num; return *this; };
    Test& div(int num) { x /= num; return *this; };
    static int getObjCount(){ return common; };
    static void sayName() { std::cout << "I'm a Test class!\n"; };
};

//int getXTest(Test* const obj) { return obj->x; };

int Test::common{0};

int cnt()
{
    static int cntNum{ 55 };
    return ++cntNum;
}


//Test* const this; //1
//const Test* this; //2

int main()
{

    //for (int i{ 0 }; i < 5; ++i)
    //{
    //  std::cout << cnt() << '\n';
    //};

    //std::cout << Test::common << '\n';
    //Test::common = 888;
    //std::cout << Test::common << '\n';
    //std::cout << "There are " << Test::getObjCount() << " objects of Test class \n";
    //std::cout << "\n\n";
    Test anotherTest{ 555, 55 };
    //std::cout << "\n\n";
    //std::cout << "There are " << anotherTest.getObjCount() << " objects of Test class \n";

    Test newTest{ 555 };
    //std::cout << "\n\n";
    //std::cout << "There are " << myTest.getObjCount() << " objects of Test class \n";

    //std::cout << "We got mytest up and running!\n";
    //myTest.setX(42);
    //std::cout << myTest.getX() << '\n';
    //std::cout << myTest.getX() << '\n';
    //std::cout << anotherTest.getX() << '\n';

    //std::cout << myTest.isEqual(&myTest) << '\n'; //1
    //std::cout << myTest.isEqual(&anotherTest) << '\n'; //0
    //std::cout << myTest.isEqual(&newTest) << '\n'; //0

    //std::cout << anotherTest.isEqual(&anotherTest) << '\n'; //1
    //std::cout << anotherTest.isEqual(&myTest) << '\n'; //0
    //std::cout << anotherTest.isEqual(&newTest) << '\n'; //0

    //std::cout << myTest.getSize() << '\n';
    //std::cout << anotherTest.getSize() << '\n';

    Test myTest{ 555 };

    std::cout << myTest.getX() << '\n';
    myTest.sub(555).add(10).add(2).mul(2); // x == 24;
    //myTest.sub(555);  // x == 0;
    myTest.add(10); // x == 10;
    //myTest.add(2); // x == 12;
    //myTest.mul(2); // x == 24;
    std::cout << myTest.getX() << '\n'; //24

}