#include <string>
#include <iostream>
#include <list>
#include <stdio.h>

using namespace std;  //Usually want to use the std namespace

//declare our own namespace
namespace test{
   string msg1 = "!";
}

//The message class that holds a string
class Message{
   //public members of Message
 public:
   Message(string);
   void printMsg();

 private:
   string msg1;
};

//Use Scope Resolution operator :: to show this is part of Message
//Constructor
Message::Message(string a){
   this->msg1 = a;
}

//Just a display function
void Message::printMsg(){
   printf("Message: (%s)\n", this->msg1.c_str());

}

//entry point
int main(){
   string input;
   string header("Hello World");

   cout << header << " " << endl; //The << operator appends strings for printing

   list<Message *> msgs;
   list<Message *>::iterator msg_iter;

   while (cin >> input) {

       if (strcmp(input.c_str(), "done") == 0) { //strcmp looks like a c function... why?
           break;
       }

       Message * in_msg = new Message(input);

       msgs.push_back(in_msg);
   }

   for (msg_iter = msgs.begin(); msg_iter != msgs.end(); msg_iter++) {
       (*msg_iter)->printMsg();  //*msg_iter points to current message
       delete(*msg_iter); //no garbage collector, delete manually!
   }

   cout << test::msg1 << endl; //This msg1 is from the namespace test

}