#include <iostream>
#include <string>

class C
{
    std::string s_;
public:
    C(const std::string& s)
        : s_(s)
    {}
    
    const std::string& get_s() const
    {
        return s_;
    }
};

int main()
{
    C c("Hello, World!");
    std::cout << c.get_s() << '\n';
}