#include <iostream>
#include <string>

class Example
{
public:
    Example();
    void setString(const std::string& s) { m_string = s; }
    std::string getString() const { return m_string; }
private:
    std::string m_string;
};

Example::Example()
: m_string()
{}

int main(int, char**)
{
    Example ex;
    std::cout << "Default string is " << ex.getString() << std::endl;
    ex.setString("Hello");
    std::cout << "New string is " << ex.getString() << std::endl;
    return 0;
}