#include <iostream>
 
class MyString
{
    char* m_pStr;  
public:
    MyString();
    MyString(char* string);
    friend std::ostream& operator<<(std::ostream& os, const  MyString& string);
};
 
MyString::MyString() : m_pStr("Default") {}
MyString::MyString(char* string) : m_pStr(string) {}
 
std::ostream& operator<<(std::ostream& os,const  MyString& string)
{
    os << string.m_pStr;
    return os;
}
 
int main() {
	MyString s1;
	MyString s2("Test");
 
	std::cout << s1 << s2;
 
	return 0;
}

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