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

class Command {
   int type;
   static int next;
public:
   Command()     { type = (next++ % 3); }
   int getType() { return type; }
   void fee()    { cout << "fee  "; }
   void phi()    { cout << "phi  "; }
   void pheaux() { cout << "pheaux  "; }
};
int Command::next = 0;

class Queue {
   enum { SIZE = 10 };
   Command*  array[SIZE];
   int       add, remove;
public:
   Queue() { add = remove = 0; }
   void enque( Command* c ) {
      array[add] = c;
      add = (add + 1) % SIZE; }
   Command* deque() {
      int temp = remove;
      remove = (remove + 1) % SIZE;
      return array[temp]; }
};

void main( void ) {
   Queue   que;
   Command input[6], *cmd;

   for (int i=0; i < 6; i++)
      que.enque( &input[i] );

   for (i=0; i < 6; i++) {
      cmd = que.deque();
      if (cmd->getType() == 0)
         cmd->fee();
      else if (cmd->getType() == 1)
         cmd->phi();
      else if (cmd->getType() == 2)
         cmd->pheaux();
   }
   cout << '\n';
}

// fee  phi  pheaux  fee  phi  pheaux



#if 0

class Command {
   static void (Command::*ptrs[])();
   static int next;
   void (Command::*action)();
public:
   Command()      { action = ptrs[(next++ % 3)]; }
   void fee()     { cout << "fee  "; }
   void phi()     { cout << "phi  "; }
   void pheaux()  { cout << "pheaux  "; }
   void execute() { (this->*action)(); }
};
int Command::next = 0;
void (Command::*Command::ptrs[])() = { Command::fee, Command::phi,
   Command::pheaux };

class Queue {
   enum { SIZE = 10 };
   Command*  array[SIZE];
   int       add, remove;
public:
   Queue() { add = remove = 0; }
   void enque( Command* c ) {
      array[add] = c;
      add = (add + 1) % SIZE; }
   Command* deque() {
      int temp = remove;
      remove = (remove + 1) % SIZE;
      return array[temp]; }
};

void main( void ) {
   Queue   que;
   Command input[6], *cmd;

   for (int i=0; i < 6; i++)
      que.enque( &input[i] );

   for (i=0; i < 6; i++) {
      cmd = que.deque();
      cmd->execute();
   }
   cout << '\n';
}

// fee  phi  pheaux  fee  phi  pheaux

#endif