C++输出流名字重命名，代码重用

#include<iostream>
class employee
{
private:
    std::string mname;
    std::string mssn;
public:
    employee(const std::string &name,const std::string &ssn):mname(name),mssn(ssn){};
    const std::string & getname()const;
    void print(std::ostream& out)const;
    void print(std::ostream& out,const std::string& msg)const;
};
const std::string& employee::getname()const
{
    return mname;
}
void employee::print(std::ostream& out)const
{
    out<<mname<<'\n';
    out<<mssn<<'\n';
}
void employee::print(std::ostream& out , const std::string& msg)const
{
    out<<msg<<'\n';
    print(out);//推荐使用代码重用
}
int main()
{
    employee A("yang","abd");
    A.getname();
    A.print(std::cout);
    A.print(std::cout,"ada");
}