MyString

// MyString.h
#include <iostream>

class MyString
{
    std::string m_pStr;
public:
    MyString();
    MyString(std::string string);
    friend std::ostream& operator<<(std::ostream& os, const  MyString& string);
};


//MyString.cpp
#include <iostream>

#include "MyString.h"

std::ostream& operator<<(std::ostream& os, const  MyString& string)
{
    os << string.m_pStr;
    return os;
}