#include <iostream>
using namespace std;

class PhoneNumber
{
private:
  string cityCode, number;
public:
  PhoneNumber();
  PhoneNumber(string, string);
  void Set(string, string);
  void Get();
  friend ostream& operator<<(ostream&, PhoneNumber&);
  friend istream& operator>>(istream&, PhoneNumber&);
};
PhoneNumber::PhoneNumber()
{
  cityCode = number = "";
}
PhoneNumber::PhoneNumber(string inCityCode, string inNumber)
{
  Set(inCityCode, inNumber);
}
void PhoneNumber::Set(string inCityCode, string inNumber)
{
  cityCode = inCityCode;
  number = inNumber;
}
ostream& operator<<(ostream& out, PhoneNumber& phone)
{
  cout << "friend" << endl;
  out <<"Phone number (" << phone.cityCode << ")" << phone.number << endl;
  return out;
}

istream& operator>>(istream& in, PhoneNumber& phone)
{
  cout << "Input City Code" << endl;
  in >> phone.cityCode;
  cout << "Input the Number" << endl;
  in >> phone.number;
  return in;
}


void PhoneNumber::Get()
{
  cout << "Phone number (" << cityCode << ")" << number << endl;
}

int main()
{
  PhoneNumber obj("499", "3456789");
  obj.Get();
  cin >> obj;
  cout << obj;
}