istream operator

int main()
{
    HandPhone A,B;
    A>>B;//overloading operator>> to simulate sending sms to another handphone(object)
    return 0;
}

void operator >> (HandPhone& a, HandPhone& b)
{
    // Add code here.
}

B.sendMessageTo(A,Message("PLOP"));

class A;
class B;

A operator << (A& a, const B& b)    // a << b;  sends b to a.
{
   a.sendMessage(b);
   return a;
}