#include <string>
#include <iostream>

class Printer
{
public:
    Printer() = default;
    virtual ~Printer() = default;
    virtual void print() const = 0;
};

class Number_Printer : public Printer
{
public:

    Number_Printer(int value)
        : Printer{}, value {value}
    {}

    void print() const override
    {
        std::cout << value << std::endl;
    }

private:
    int value;
};


class Text_Printer : public Printer
{
public:

    Text_Printer(std::string const& value)
        : Printer{}, value {value}
    {}

    void print() const override
    {
        std::cout << "\"" << value << "\"" << std::endl;
    }

private:
    std::string value;
};


void print_something(Printer& p)
{
    p.print();
}

int main()
{
    Number_Printer number { 5 };
    Text_Printer text { "My text" };
    print_something(number);
    print_something(text);
}