#inlcude <iostream>
#include <cstring>
using namepsace std;

class tst{
    char name[15];
    int acode, pNum;
public:
    tst(char *nm, int areacode, int num)
   {name = nm; acode=areacode; pNum=num;}
friend ostream &operator<<(ostream &stream, tst obj);
}

ostream &operator<<(ostream &stream, tst obj);
{
stream<< "NAME: "<< obj.name <<".\nNUMBER: ";
stream<< obj.acode <<'-'<<obj.pNum<<".\n\n";

return stream;
}

int main()
{
  tst a("Lan", 44208, 6946360);
  cout<<a<<endl;  //<< also MSVC finds this line ambiguos

return 0;
}

class A
{
   public:
      virtual ostream& print(ostream& os) const
       { // do printing; return os;}
};

ostream& operator << (ostream& os, const A& a)
{
   return a.print(os);
}

#include <iostream>
#include <string>
using namespace std;

class tst
{
    string m_name;
    int m_areacode, m_phonenum;

public:
    tst(const char *name, int areacode, int phonenum)
        : m_name(name), m_areacode(areacode), m_phonenum(phonenum) {}

    friend ostream& operator<<(ostream &stream, const tst &obj);
};//tst

ostream& operator<<(ostream &stream, const tst &obj)
{
    stream << "NAME:   " << obj.m_name.c_str() << endl
           << "NUMBER: " << '(' << obj.m_areacode << ')' 
                         << obj.m_phonenum << endl << endl;
    return stream;
}//ostream << tst

int main()
{
    tst a("Lan", 555, 6785309);
    
    cout << a;

    return 0;
}//main

virtual ostream& print(ostream& os) const