Question: Improve the Lobby class from the Game Lobby program by writing a friend function of the Player class that allows a player object to be
Improve the Lobby class from the Game Lobby program by writing a friend function of the Player class that allows a player object to be sent to cout. Next, update the function that allows a Lobby object to be sent to count so that it uses your new function for sending a Player object to cout.
This is what I have so far and there is an error that I am not sure why I am getting though I checked the code several times to see why its giving me the errors.
This is the code below:
//Game Lobby
//Simulates a game lobby where players wait
#include
#include
using namespace std;
class Player
{
public:
Player(const string&name = "");
string GetName()const;
Player*GetNext()const;
void SetNext(Player*next);
private:
string m_Name;
Player*m_pNext; //Pointer to next player in list
};
Player::Player(const string&name) :
m_Name(name),
m_pNext(0)
{}
string Player::GetName()const
{
return m_Name;
}
Player*Player::GetNext()const
{
return m_pNext;
}
void Player::SetNext(Player*next)
{
m_pNext = next;
}
class Lobby
{
friend ostream&operator
public:
Lobby();
~Lobby();
void AddPlayer();
void RemovePlayer();
void Clear();
private:
Player*m_pHead;
};
void Lobby::AddPlayer()
{
//create a new player node
cout
string name;
cin >> name;
Player*pNewPlayer = new Player(name);
//if list is empty, make head of list this new player
if (m_pHead == 0)
{
m_pHead = pNewPlayer;
}
//otherwise find the end of the list and add the player there
else
{
Player*pIter = m_pHead;
while (pIter->GetNext() != 0)
{
pIter = pIter->GetNext();
}
pIter->SetNext(pNewPlayer);
}
}
void Lobby::RemovePlayer()
{
if (m_pHead == 0)
{
cout
}
else
{
Player*pTemp = m_pHead;
m_pHead = m_pHead->GetNext();
delete pTemp;
}
}
void Lobby::Clear()
{
while (m_pHead != 0)
{
RemovePlayer();
}
}
ostream&operator
{
Player*pIter = aLobby.m_pHead;
os
if (pIter == 0)
{
os
}
else
{
while (pIter != 0)
{
os GetName()
pIter = pIter->GetNext();
}
}
return os;
}
int main()
{
Lobby myLobby;
int choice;
do
{
cout
cout
cout
cout
cout
cout
cout
cin >> choice;
switch (choice)
{
case 0: cout
case 1: myLobby.AddPlayer(); break;
case 2: myLobby.RemovePlayer(); break;
case 3: myLobby.Clear(); break;
default:cout
}
}
while (choice != 0);
return 0;
}
Error List * 3 Errors ! ! 0Warnings | 00 Messages Search Error List File lobby.obj lobby.obj lobby.exe Line Column Project Description error LNK2019: unresolved external symbol "public:_thiscall Lobby:Lobby(void)" (220Lobby@@OAE@XZ) referenced in function_main 2 error LNK2019: unresolved external symbol "public:_thiscall Lobby: Lobby(void)" (?21Lobby@@OAE@XZ) referenced in function_main 3 error LNK1120: 2 unresolved externals lobby lobby lobby
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