|
The weird thing is that I'm getting access related errors when I'm trying to clean-up from the calling class.
...
CSentenceList::~CSentenceList()
{
// Clear the data
CGenericNode<char*> *pTemp = Sentences.m_pFirst;
while(pTemp != NULL)
{
CGenericNode<char*> *pRemember = pTemp->m_pNextNode;
free (pTemp->data);
pTemp = pRemember;
}
}
...
c:\Documents and Settings\Jon\My Documents\Visual Studio Projects\IAD Practice and Assignment\C++ - Assignment\02 & 03 - Sentence\SentenceClass\SentenceList.cpp(19): error C2248: 'CGenericList<T>::m_pFirst' : cannot access private member declared in class 'CGenericList<T>'
with
[
T=char *
]
and
[
T=char *
]
c:\Documents and Settings\Jon\My Documents\Visual Studio Projects\IAD Practice and Assignment\C++ - Assignment\02 & 03 - Sentence\SentenceClass\SentenceList.cpp(22): error C2248: 'CGenericNode<T>::m_pNextNode' : cannot access private member declared in class 'CGenericNode<T>'
with
[
T=char *
]
and
[
T=char *
]
CGenericList.h
#pragma once
#include ".\GenericNode.h"
#include <iostream>
#include <stdlib.h>
#include <tchar.h>
using namespace std;
template<class T>
class CGenericList
{
public:
CGenericList(void)
{
m_pFirst = NULL;
m_pLast = NULL;
m_iCount = 0;
}
virtual ~CGenericList(void)
{
Clear();
}
void Insert(T pData)
{
// create the node to store our data
CGenericNode<T> *pNode = new CGenericNode<T>;
pNode->data = pData; // set the payload
if(m_iCount == 0)
{
m_pFirst = pNode;
m_pLast = pNode;
}
else
{
m_pLast->m_pNextNode = pNode;
m_pLast = pNode;
}
m_iCount++;
}
bool Find(T pData)
{
CGenericNode<T> *pTemp = m_pFirst;
while(pTemp != NULL)
{
if(pTemp->data == pData)
return true;
pTemp = pTemp->m_pNextNode;
}
return false;
}
bool Remove(T pData)
{
CGenericNode<T> *pTemp = m_pFirst;
CGenericNode<T> *pPrevious = NULL; // keep track of previous node
while(pTemp != NULL)
{
if(pTemp->data == pData)
{
// we found the node!
RemoveNode(pPrevious, pTemp); // call helper method
return true; // true indicates that something was removed
}
pPrevious = pTemp; // remember the previous node
pTemp = pTemp->m_pNextNode;
}
return false; // we found nothing here
}
int GetCount()
{
return m_iCount;
}
void Display()
{
CGenericNode<T> *pTemp = m_pFirst;
int iCount = 0;
while(pTemp != NULL)
{
iCount++;
cout << iCount << "|";
cout << pTemp->data << _T(" ");
cout << endl;
pTemp = pTemp->m_pNextNode;
}
}
protected:
int m_iCount;
CGenericNode<T> *m_pFirst;
CGenericNode<T> *m_pLast;
// helper method
void Clear() // empties the list
{
CGenericNode<T> *pTemp = m_pFirst;
// clear the nodes
while(pTemp != NULL)
{
CGenericNode<T> *pRemember = pTemp->m_pNextNode;
delete pTemp;
pTemp = pRemember;
}
m_iCount = 0;
}
void RemoveNode(CGenericNode<T> *pPrevious, CGenericNode<T> *pTemp)
{
if(pPrevious == NULL) // remove the first node
{
m_pFirst = pTemp->m_pNextNode;
if(m_pFirst == NULL) m_pLast = NULL; // this was the only node
delete pTemp; // delete the original node
}
else
{
pPrevious->m_pNextNode = pTemp->m_pNextNode; // skip this node
if(pPrevious->m_pNextNode == NULL) // in case we are deleting the last node
m_pLast = pPrevious;
delete pTemp;
}
m_iCount--;
}
};
CGenericNode.h
#pragma once
#include <stdlib.h>
// forward declaration of CGenericList (it is a template)
// and is a friend of CGenericNode
template<class T> class CGenericList;
// declaration of CGenericNode
template<class T>
class CGenericNode
{
friend CGenericList<T>;
public:
CGenericNode()
{
m_pNextNode = NULL;
}
T data;
//protected:
// T m_data;
private:
CGenericNode<T> *m_pNextNode;
};
Jon
|
|
|
|
|
Hello,
I received an error message when i tried to send serial port the datas with outportb.
%Starting with dos.h library
...
int port=0x378;
outportb(int port, unsigned int);
...
...
for ( i=0 ; i<8 ; i++)
{
outportb(port,member.u8value[i]);
}
...
Error Message ==> [Linker Error] Unresolved external '_outportb' referenced from H:\INTERFACE\INTERFACE.OBJ
(Interface is the file in which all datas are saved)
What could be the problem? Thanks for your tricks in advance.
Regards,
Cahit
|
|
|
|
|
In Windows NT and later, you cannot directly access serial ports.
But check this article[^]
See Part 5 for a link to the source to inpout32.dll, which can be used in NT +
Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson
|
|
|
|
|
Hello,
I'm currently programming a basic TCP client-server application, but i've some problems with winsock.
Can you help me?
I have this errors in my program:
error C2079: 'ifr' uses undefined struct 'ifreq'
error C2065: 'buffer' : undeclared identifier
error C2065: 'DEVICE' : undeclared identifier
error C2065: 'ioctl' : undeclared identifier
error C2065: 'SIOCGIFINDEX' : undeclared identifier
error C2039: 'ifr_ifindex' : is not a member of 'ifreq'
see declaration of 'ifreq'
error C2065: 'SIOCGIFHWADDR' : undeclared identifier
error C2039: 'ifr_hwaddr' : is not a member of 'ifreq'
see declaration of 'ifreq'
error C2228: left of '.sa_data' must have class/struct/union type
error C2065: 'PACKET_OTHERHOST' : undeclared identifier
error C2065: 'time' : undeclared identifier
error C2027: use of undefined type 'ethhdr'
see declaration of 'ethhdr'
error C2227: left of '->h_proto' must point to class/struct/union
error C2065: 'ETH_TYPE_NULL' : undeclared identifier
error C2065: 'gettimeofday' : undeclared identifier
error C2027: use of undefined type 'ethhdr'
see declaration of 'ethhdr'
What are the header file for the ifreq struct? and for the sockaddr_ll struct?
Can you help me?
thanks
|
|
|
|
|
try this:
#include <afxsock.h> // MFC socket extensions
|
|
|
|
|
try this:
#include // MFC socket extensions
I didn't understand, where i get the MFC socket extensions.
Is it needed a program to install those extensions??
Can you help me again?
|
|
|
|
|
He didn't type the <> correctly. He was saying to include:
#include <afxsock.h>
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
|
|
|
|
|
thank you Zac....i still get the same errors with or without the MFC socket extensions.
What are the header file for ifreq, sockaddr_ll structures??
thanks
|
|
|
|
|
They should be in the winsock2.h header (which is included from the afxsock.h file).
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
|
|
|
|
|
Those structures aren't include in winsock2.h
Another question, Is necessary put this lines before open a socket?
int wsaret=WSAStartup(0x101,&wsaData);
//WSAStartup returns zero on success.
//If it fails we exit.
if(wsaret!=0)
{
return 0;
}
|
|
|
|
|
afpr wrote: Another question, Is necessary put this lines before open a socket?
int wsaret=WSAStartup(0x101,&wsaData);
Only if you want it to work. Otherwise, you'll likely receive a WSANOTINITIALISED error.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
|
|
|
|
|
You don't have to call that before you open each socket, but it does need to be called at some point in your application prior to opening a socket.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
|
|
|
|
|
To work with sendto() or recvfrom() functions, is it necessary to use WSAstartup function?
|
|
|
|
|
WSAStartup MUST be called once in your program before any socket operations can be performed. This is typically don't in the InitInstance method, but doesn't have to be.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
|
|
|
|
|
thanks Zac, but i have some errors, can you help me?
These are de errors:
1-
'DEVICE' : undeclared identifier
'ioctlsocket' : cannot convert parameter 3 from 'struct ifreq *' to 'unsigned long *'
in this lines:
strncpy(ifr.ifr_name, DEVICE, IFNAMSIZE);
if (ioctlsocket(s, SIOCGIFINDEX, &ifr) == -1) {
perror("SIOCGIFINDEX");
exit(1);
}
2-
'function-style cast' : illegal as right side of '.' operator
left of '.sa_data' must have class/struct/union type
in this line:
for (i = 0; i < 6; i++) {
src_mac[i] = ifr.sockaddrifr_hwaddr.sa_data[i]; src_mac is unsigned char src_mac[6]
}
3-
use of undefined type 'ethhdr'
see declaration of 'ethhdr'
left of '->h_proto' must point to class/struct/union
ETHER_TYPE_NULL' : undeclared identifier
in this line:
eh->h_proto = ETHER_TYPE_NULL;
4-
'gettimeofday' : undeclared identifier
in this line:
gettimeofday(&begin,NULL);
thanks
|
|
|
|
|
You need to include header file or files did you include files
|
|
|
|
|
i am using VC++6 with DOM creating and manuplating XML file.
i had created xml tags at run time and given default namespace , created some child nodes like this
<root xmlns="http://...">
<firstchild/>
<secondchild/>
</root>
,now i need to get the child from other part of the project so
I am using selectSingleNode() say like selectSingleNode("//root") but this is returning null so I used setProperty() to add a prefix to the namespace
and called the selectSingleNode("//pre:root") but still it is returning Null
y is it so
thanks in advance
|
|
|
|
|
I'm working with VC++6.0. I have a SDI application. I want to do unit test on some functions, but how do I run it?
Say I have a function
BOOL IsValid (MyType *p);
And the unit test I write for it is:
void TestIsValid()
When I run my application in Debug mode, how can I run "TestIsValid"?
Thank you very much for any help!
|
|
|
|
|
Use the #ifdef and #endif blocks:
BOOL IsValid (MyType *p) {
#ifdef _DEBUG
TestIsValid();
#endif
}
|
|
|
|
|
thank you, walder.
but in my "TestIsValid()", I will call "IsValid()", I'm afraid this will cause an infinite recurrent problem.
the other problem is, "IsValid( )" is called quite a few times in the application, I don't want to run the unit test code all the time.
Is there a way to get something like a shell window, and I just type in "TestIsValid" to get it run?
Thanks!
|
|
|
|
|
deport your unit tests into their own project into the solution, with a reference to the sources to be tested.
|
|
|
|
|
thank you, toxcct.
Can you elaborate on how to do that?
|
|
|
|
|
Sorry, I'm having a difficult time trying to understand what you are doing? It sounds like you have a function TestIsValid() which in turn calls IsValid() which in turn calls TestIsValid(), and so on... Perhaps you could show me some code.
You dont have to use the only the DEBUG definition, you can create your own
#ifdef DEBUG
#ifdef MYFUNC_1
#endif
#endif
|
|
|
|
|
do you know what unit tests are for ?
they are written to verify that management rules are correctly implemented. for this, unit tests can be ran, but they mustn't be included in the main project as their code is only for the development purpose...
|
|
|
|
|
toxcct wrote: for this, unit tests can be ran, but they mustn't be included in the main project as their code is only for the development purpose
That is, of course, unless you are following one of the Agile Design models. In almost all of those paradigms, the unit test cases should accompany the source code, but won't get linked into the final application (generally, you have a separate unit-test project file that has a main.cpp that simply calls all your unit tests and reports the results).
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
