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The displayBoard() method is fine. What you need to do is populate the board variable with Xs and Os.
You need a method that asks the user which of the seven slots they want to insert a piece into. If that slot is not full, add a piece to it (this is the real meat of your program). Otherwise, tell them the slot is full and ask again.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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ok...but all i have is
cout << "What column do you want to drop a chip in?;
cin >> //do i use an arrary for cin?
for(int j=0; j<13; j++)
{
cout << board[j] << "X";
}
~jason
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Based on this this picture, you should have a 6-row by 7-column board. That said, you could have something like:
int nColumn;
cout << "What column do you want to drop a chip in (1-7)? ";
cin >> nColumn;
for (int nRow = 0; nRow < 6; nRow++)
{
if (' ' == board[][])
{
board[][] = 'X';
break;
}
}I'll leave the two [][] for you to conquer.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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How's it going with this exercise?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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Good..I got it takeing care of....thanks for checking up on me! I have so much trouble with this class. I"m strungling to pass =\
~Jason
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hi!
i've just finished writing a linked list template class, which compiles fine, but when i try to use it in another file (main.cpp) in my console test app' i get LNK2019 errors for every method of the class being used. i've copied the class & output below, so if anyone has any ideas i would REALLY appreciate some help because i'm completely stuck!! thanks!!
#ifndef _LINKEDLIST_H_
#define _LINKEDLIST_H_
#pragma message (" -+- COMPILING " __FILE__)
// declare classes...
template <class type> class ListElement;
template <class type> class LinkedList;
/*
************************
linkedlist class
************************
*/
template <class type> class LinkedList
{
public:
//
// constructor/destructor
//
LinkedList<type>();
~LinkedList<type>();
//
// public methods
//
bool InsertNext(ListElement<type>* pElement, const type* pData);
bool RemoveNext(ListElement<type>* pElement, type** ppData);
ListElement<type>* GetHead();
ListElement<type>* GetTail();
int GetSize();
bool IsHead(const ListElement<type>& element);
bool IsTail(const ListElement<type>& element);
bool IsEmpty();
ListElement<type>* GetElementByIndex(int index);
LinkedList<type>* Clone();
LinkedList<type>* Copy();
void FreeData();
private:
//
// private methods
//
void SetHead(ListElement<type>* pHead);
void SetTail(ListElement<type>* pTail);
void SetSize(int size);
//
// private member data
//
int m_size;
ListElement<type>* m_pHead;
ListElement<type>* m_pTail;
};
/*
*************************
listelement class
*************************
*/
template <class type> class ListElement
{
public:
//
// constructor/destructor
//
ListElement();
~ListElement();
//
// public methods
//
type* GetData();
void SetData(type* pData);
void FreeData();
ListElement<type>* GetNext();
void SetNext(ListElement<type>* pNext);
type* CloneData();
private:
//
// private member data
//
type* m_pData;
ListElement<type>* m_pNext;
};
#endif // _LINKEDLIST_H_
#pragma message (" -+- COMPILING " __FILE__)
#include <stdlib.h>
#include "linkedlist.h"
/*
************************
linkedlist class
************************
*/
template <class type>
LinkedList<type>::LinkedList() : m_size(0), m_pHead(NULL), m_pTail(NULL)
{
// do nothing
}
template <class type>
LinkedList<type>::~LinkedList()
{
if (m_pHead != NULL)
delete m_pHead;
}
template <class type>
bool LinkedList<type>::InsertNext(ListElement<type>* pElement, const type* pData)
{
ListElement<type>* pNewElement = new ListElement<type>;
if (pNewElement == NULL)
return false;
pNewElement->SetData(const_cast<type*> (pData));
if (pElement == NULL) // insertion @ head of list...
{
if (this->GetSize() == 0)
this->SetTail(pNewElement);
pNewElement->SetNext(this->GetHead());
this->SetHead(pNewElement);
}
else // insertion somewhere other than @ the head...
{
if (pElement->GetNext() == NULL)
this->SetTail(pNewElement);
pNewElement->SetNext(pElement->GetNext());
pElement->SetNext(pNewElement);
}
this->SetSize(this->GetSize() + 1);
return true;
}
template <class type>
bool LinkedList<type>::RemoveNext(ListElement<type>* pElement, type** ppData)
{
ListElement<type>* pOldElement;
if (this->GetSize() == 0)
return false;
// if null then handle removal from head of list...
if (pElement == NULL)
{
*ppData = this->GetHead()->GetData();
pOldElement = this->GetHead();
this->SetHead(this->GetHead()->GetNext());
if (this->GetSize() == 1)
{
this->SetTail(NULL);
}
}
else
{
if (pElement->GetNext() == NULL)
return false;
*ppData = pElement->GetNext()->GetData();
pOldElement = pElement->GetNext();
pElement->SetNext(pElement->GetNext()->GetNext());
if (pElement->GetNext() == NULL)
{
this->SetTail(pElement);
}
}
delete pOldElement;
this->SetSize(this->GetSize() - 1);
return true;
}
template <class type>
ListElement<type>* LinkedList<type>::GetHead()
{
return m_pHead;
}
template <class type>
ListElement<type>* LinkedList<type>::GetTail()
{
return m_pTail;
}
template <class type>
int LinkedList<type>::GetSize()
{
return m_size;
}
template <class type>
bool LinkedList<type>::IsHead(const ListElement<type>& element)
{
return this->GetHead() == element ? true : false;
}
template <class type>
bool LinkedList<type>::IsTail(const ListElement<type>& element)
{
return this->GetTail() == element ? true : false;
}
template <class type>
bool LinkedList<type>::IsEmpty()
{
return this->GetSize() == 0 ? true : false;
}
template <class type>
ListElement<type>* LinkedList<type>::GetElementByIndex(int index)
{
int i;
ListElement<type>* pTmp = NULL;
if (this->GetSize() == 0 || index >= this->GetSize())
return pTmp;
pTmp = this->GetHead(); // element zero
for (i = 1; i <= index; i++)
{
pTmp = pTmp->GetNext();
}
return pTmp;
}
template <class type>
LinkedList<type>* LinkedList<type>::Clone()
{
LinkedList<type>* pNewList = NULL;
ListElement<type>* pSrcElement = NULL;
if (this->GetSize() == 0)
return pNewList;
pNewList = new LinkedList<type>;
pSrcElement = this->GetHead();
pNewList->InsertNext(NULL, pSrcElement->CloneData());
while (pSrcElement->GetNext() != NULL)
{
pSrcElement = pSrcElement->GetNext();
pNewList->InsertNext(pNewList->GetTail(), pSrcElement->CloneData());
}
return pNewList;
}
template <class type>
LinkedList<type>* LinkedList<type>::Copy()
{
LinkedList<type>* pNewList = NULL;
ListElement<type>* pSrcElement = NULL;
if (this->GetSize() == 0)
return pNewList;
pNewList = this;
pSrcElement = this->GetHead();
pNewList->InsertNext(NULL, pSrcElement->CloneData());
while (pSrcElement->GetNext() != NULL)
{
pSrcElement = pSrcElement->GetNext();
pNewList->InsertNext(pNewList->GetTail(), pSrcElement->GetData());
}
return pNewList;
}
template <class type>
void LinkedList<type>::FreeData() // only call when data is allocated on the heap
{
ListElement<type>* pElement = NULL;
if (this->GetSize() == 0)
return;
pElement = this->GetHead();
pElement->FreeData();
while (pElement->GetNext() != NULL)
{
pElement = pElement->GetNext();
pElement->FreeData();
}
}
template <class type>
void LinkedList<type>::SetHead(ListElement<type>* pHead)
{
m_pHead = pHead;
}
template <class type>
void LinkedList<type>::SetTail(ListElement<type>* pTail)
{
m_pTail = pTail;
}
template <class type>
void LinkedList<type>::SetSize(int size)
{
m_size = size;
}
/*
*************************
listelement class
*************************
*/
template <class type>
ListElement<type>::ListElement<type>() : m_pData(NULL), m_pNext(NULL)
{
// do nothing
}
template <class type>
ListElement<type>::~ListElement<type>()
{
if (m_pNext != NULL)
delete m_pNext;
}
template <class type>
type* ListElement<type>::GetData()
{
return m_pData;
}
template <class type>
void ListElement<type>::SetData(type* pData)
{
m_pData = pData;
}
template <class type>
void ListElement<type>::FreeData()
{
if (m_pData != NULL)
delete m_pData;
}
template <class type>
ListElement<type>* ListElement<type>::GetNext()
{
return m_pNext;
}
template <class type>
void ListElement<type>::SetNext(ListElement<type>* pNext)
{
m_pNext = pNext;
}
template <class type>
type* ListElement<type>::CloneData()
{
type* pNewData = new type;
*pNewData = *m_pData;
return pNewData;
}
Linking...
main.obj : error LNK2019: unresolved external symbol "public: __thiscall Stack<int,100>::~Stack<int,100>(void)" (??1?$Stack@H$0GE@@@QAE@XZ) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: __thiscall Stack<double,30>::~Stack<double,30>(void)" (??1?$Stack@N$0BO@@@QAE@XZ) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall Stack<int,100>::push(int const &)" (?push@?$Stack@H$0GE@@@QAEXABH@Z) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall Stack<double,30>::push(double const &)" (?push@?$Stack@N$0BO@@@QAEXABN@Z) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: bool __thiscall Stack<int,100>::isEmpty(void)const " (?isEmpty@?$Stack@H$0GE@@@QBE_NXZ) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: __thiscall Stack<double,30>::Stack<double,30>(void)" (??0?$Stack@N$0BO@@@QAE@XZ) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: __thiscall Stack<int,100>::Stack<int,100>(void)" (??0?$Stack@H$0GE@@@QAE@XZ) referenced in function "void __cdecl stackfunc(void)" (?stackfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: class LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > * __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::Clone(void)" (?Clone@?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAV1@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: class ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > * __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::GetElementByIndex(int)" (?GetElementByIndex@?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAV?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@H@Z) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: class ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > * __thiscall ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::GetNext(void)" (?GetNext@?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAV1@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: class ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > * __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::GetHead(void)" (?GetHead@?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAV?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: int __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::GetSize(void)" (?GetSize@?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEHXZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: class ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > * __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::GetTail(void)" (?GetTail@?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAV?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: bool __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::InsertNext(class ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const *)" (?InsertNext@?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAE_NPAV?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@PBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > * __thiscall ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::GetData(void)" (?GetData@?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::SetData(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > *)" (?SetData@?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEXPAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: __thiscall ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::ListElement<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >(void)" (??0?$ListElement@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAE@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >(void)" (??0?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAE@XZ) referenced in function "void __cdecl listfunc(void)" (?listfunc@@YAXXZ)
main.obj : error LNK2019: unresolved external symbol "public: __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::~LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >(void)" (??1?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAE@XZ) referenced in function "public: void * __thiscall LinkedList<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::`scalar deleting destructor'(unsigned int)" (??_G?$LinkedList@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEPAXI@Z)
Debug/list_test.exe : fatal error LNK1120: 19 unresolved externals
list_test - 20 error(s), 2 warning(s)
---------------------- Done ----------------------
Build: 0 succeeded, 1 failed, 0 skipped
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You might want to use <pre> tags in the future so that code is readable. Does main.cpp include the file linkedlist.h?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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here's a bit of main.cpp:
#include <string>
#include <iostream>
using namespace std;
#include "linkedlist.h"
void listfunc()
{
ListElement<string>* pStrElmt = NULL;
LinkedList<string>* pStrList = new LinkedList<string>;
string sData1("NUMERO UNO!");
string sData2("NUMERO DOS!");
string sData3("NUMERO TRES!");
string sData4("NUMERO QUATRO!");
string sData5("NUMERO CINQO!");
// element 1
pStrElmt = new ListElement<string>;
pStrElmt->SetData(&sData1);
pStrList->InsertNext(NULL, pStrElmt->GetData());
// element 2
pStrElmt = new ListElement<string>;
pStrElmt->SetData(&sData2);
pStrList->InsertNext(pStrList->GetTail(), pStrElmt->GetData());
// etc...
as you can see i've #include'd where needed, & it's compiled fine, but the linker doesn't like it.
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Seems like you didnt add the file to your project via Project->Add to project->File
Papa
while (TRUE)
Papa.WillLove ( Bebe ) ;
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i'm pretty sure i did.
i'm using vs.net 2003, & added all files to the project by doing:
'project->add new item' (or it's equivalent)
there's a beginners template tutorial (part 1) on this site submitted by a chap called stefan spenz which i copied into my project in the usual way i.e. class definition into header & class implementation into source file (.cpp), then i tried to build the project with the class being used in main.cpp (with #include "stack.h" for new class where needed) and i had the same problem.
i'm obviously missing something about templates!?
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Milby007 wrote:
there's a beginners template tutorial (part 1) on this site submitted by a chap called stefan spenz which i copied into my project in the usual way i.e. class definition into header & class implementation into source file (.cpp), then i tried to build the project with the class being used in main.cpp (with #include "stack.h" for new class where needed) and i had the same problem.
There is your problem. You should include the template implementation in the header file. Read this[^] faq about C++ templates and you should do fine...
Multiply it by infinity and take it beyond eternity and you'll still have no idea about what I'm talking about.
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Example:
#include <tuple.hpp>
What does the hpp mean? Is it just for the human eye? Is it any different to the compiler than a .h file?
thanks
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It's the name of a header file for a corresponding .cpp file. With C, you have .c and .h files. With C++, you have .cpp and .hpp files. In the past 15 years, I've never used a .hpp file.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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It's just for the human eye, the compiler doesn't care.
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The compiler does not care. SOME (but not all) editors switch to C++ mode when the see *.hpp.
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I've got an About CDialog that has 2 buttons on it (OK, Release Notes). When I click the 'X' to close the dialog it acts as though I clicked on the Release Notes button. 
I can close the dialog by clicking OK, any ideas on getting it to close on 'X'?
BW
The Biggest Loser
"Farm Donkey makes us laugh.
Farm Donkey hauls some ass."
-The Stoves
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Make sure the ID of the 'Release Notes' buttons is not IDCANCEL.
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Ah, good thought, but no it's ID_RELEASE.
BW
The Biggest Loser
"Farm Donkey makes us laugh.
Farm Donkey hauls some ass."
-The Stoves
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brianwelsch wrote:
...it acts as though I clicked on the Release Notes button.
So when the "X" is clicked, the handler function for the "Release Notes" button is getting called. Yes?
What is the value of ID_RELEASE?
What does the About dialog's message map look like?
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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DavidCrow wrote:
So when the "X" is clicked, the handler function for the "Release Notes" button is getting called. Yes?
Yes
What is the value of ID_RELEASE?
2
What does the About dialog's message map look like?
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)<br />
ON_BN_CLICKED(ID_RELEASE, OnRelease)<br />
END_MESSAGE_MAP()
BW
The Biggest Loser
"Farm Donkey makes us laugh.
Farm Donkey hauls some ass."
-The Stoves
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brianwelsch wrote:
What is the value of ID_RELEASE?
2
Change it to 102 and it'll work!  ;)
Here's the reason: IDCANCEL has a value of 2.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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I changed it, but had the same issue. I ended out renaming the ID, deleting the old ID and creating a new button with the old ID name. It got a new random ID value, and all's good.
Thanks for your help, David.
BW
The Biggest Loser
"Farm Donkey makes us laugh.
Farm Donkey hauls some ass."
-The Stoves
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brianwelsch wrote:
It got a new random ID value...
Actually, there not random at all. They are controlled by the _APS_NEXT_CONTROL_VALUE macro at the bottom of the project's resource.h file.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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Does anyone know how to disable the safe mode of windows?
Thanks in advance
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