#include <string>

class A
{
public :
        A(const std::string & s) : m_name(s) {}
       ~A() { }
private :
        std::string m_name;
};

int main(int c, char * * v) 
{
        A r1(std::string(v[1]));
        const char * e = "Hello";
        A r2(std::string(e));
        std::string s(e);
        A r3(s);
        A r4(std::string("World"));
        return 0;
}