post-test.txt

1. What will be printed on the screen? What kind of problems can you see?
```cpp
#include <string>
#include <iostream>

struct A {
    void setNumber(int n);
    int getNumber() const;
private:
    int number;
};

class B : public A {
    void setText(std::string s);
	std::string getText() const;
private:
    std::string text;
};

int main() {
    A* obj = new B();
    obj->setNumber(5);
    obj->setText("hi");
    std::cout << obj->getNumber()
              << obj->getText()
			  << '\n';
}
```

https://ideone.com/dYHume

2. What will be printed on the screen? What kind of problems can you see?
```cpp
#include <string>
#include <iostream>

class A {
public:
    A() {}
    ~A() {}
    virtual std::string whoAreYou() {
        return "I'm class A";
    }
};

class B : public A {
public:
    B() {}
	~B() {}
    std::string whoAreYou() {
        return "I'm class B";
    }
};

int main() {
    A a;
    B b;
    B* bp = new A();
    A& ar = b;
    std::cout << a.whoAreYou() << '\n';
    std::cout << b.whoAreYou() << '\n';
    std::cout << bp.whoAreYou() << '\n';
    std::cout << ar.whoAreYou() << '\n';
}
```

https://ideone.com/C964oW