I had posted this earlier but no reply. Sorry for posting it again This is how it is... My Class is defined in newclass.h as...

Class A
{
public:
void out_func1();
void out_func2();
class B
{
public:
string path;
in_func1();
};
};

I then Get the path at intialize.cpp as follows....

void A::out_func1()
{
B obj;
obj.path="c:\folder\file1.txt";
}

Then I try to open the file to write in write.cpp...

void A::out_func2()
{
B obj;
ofstream myfile;
myfile.open (obj.path.c_str(), ios::app);
...
}

This crashes.I have included the header initialise.h too. Please let me know were I could have gone wrong. I think I am having problem with the scope of the varible. But I am not sure. THANKS.

Please help me out with the above problem. THANKS.

I am sorry. This is how it is... My Class is defined in newclass.h as...

Class A
{
public:
void out_func1();
void out_func2();
class B
{
public:
string path;
in_func1();
};
};

I then Get the path at intialize.cpp as follows....

void A::out_func1()
{
B obj;
obj.path="c:\folder\file1.txt";
}

Then I try to open the file to write in write.cpp...

void A::out_func2()
{
B obj;
ofstream myfile;
myfile.open (obj.path.c_str(), ios::app);
...
}

This crashes.I have included the header initialise.h too. Please let me know were I could have gone wrong. I think I am having problem with the scope of the varible. But I am not sure. THANKS.

I am doin the following...

Class A
{
public:
void out_func1();
class B
{
public:
string path;
in_func1(); //Assigning the value of path in func1
};
};

How do I use the value of path in 'out_func1()'?? I tried ...

void A::out_func1()
{
B obj;
obj.path;
ofstream myfile;
myfile.open (obj.path.c_str(), ios::app);
...
}

This causes problem during runtime and the program crashes Please let me know how to rectify this. THANKS.

true/ false is stored in that

Thanks for the reply. This can be done. But instead I am looking for some function that does this like atoi() or itoa() for string to int and vice versa. Is there any function for strings to bool.

I am getting a string from map that can be either true or false. Is there any function or some alternative to convert this string into bool. So that I can store it in a bool variable.

string temp;
temp=MyMap.find("Check")->second; // give either true or false

I want to convert temp to bool. THANKS.

I have a class as...

class Log
{public:
Log(string);
void InitializeLog(string);
...

class Initialize
{ public:
Initialize(string);
void ReadPropfile(string);
....
};
};

next I am doin this...

void Log::InitializeLog(string p_path_name)
{
Initialize obj(p_path_name);
obj.ReadPropfile(p_path_name);
}
void Log::Initialize::ReadPropfile(string log_path)
{....}

From the main I call...

Log obj(path); // path is a string
obj.InitializeLog(path);
...

When I compile I get the following error. How do I get rid of this

test_utility.obj :error LNK2001: unresolved external symbol "public: __thiscall Log::Log(class std::basic_string,class std::allocator >)" (??0Log@@QAE@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@
@std@@@Z)
properties.obj : error LNK2001: unresolved external symbol "public: __thiscall Log::Initialize::Initialize(class std::basic_string,class std::allocator >)" (??0Initialize@Log@@QAE@V?$basic_string@DU?$char_tra
its@D@std@@V?$allocator@D@2@@std@@@Z)

THANKS

I am reading a file and getting the key and values. I am putting the keys and values in the map. When I run the program I get many number of warnings like... warningC4786: 'std::_Tree,std::allocator >,std::pair,std::allocator > const , std::basic_string,std::allocator > >,std::map,std::allocator >,std::basic_string,std::allocator >,std::less,std::allocator > >,std::allocator,std::allocator > > >::_Kfn,std::less,std::allocator > >,std::allocator,std::allocator > > >' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree,std::allocator >,std::pair,std::allocator > const ,std::basic_string,std::allocator > >,std::map,std::allocator >,std::basic_string,std::allocator >,std::less,std::allocator > >,std::allocator,std::allocator > > >::_Kfn,std::less,std::allocato r > >,std::allocator,std::allocator > > >' being compiled F:\Main Project\Coding\DLL_logging_Utility\properties.cpp(41) : see reference to class template instantiation 'std::map,std::allocator >,std::basic_string,std::a llocator >,std::less,std::allocator > >,std::allocator,std::allocator > > >' being compiled THANKS

Suppose I want to make a 3d car racing game. Then in this case what things I need to be know. Please give me some examples of the requirements needed.

Please let me know what are the requirements to create a game in VC++. By requirements I mean like SDK's or game engine's etc.

Are you syncronizing threads. If there is a problem of Syncronization of threads then try using Mutex, critical section etc. try to syncronize the threads.

Please let me know how do I create a timestamp. In the following format.. 2007.11.21 16:36:46.094+00:00 Thanks

Ok fine.. But how do I store the path of the file in the registry. How does it work. THANKS

Now I do it in this way... char *prop_path; prop_path = getenv ("file.properties"); and get the following error.. error C2501: 'prop_path' : missing storage-class or type specifiers error C2040: 'prop_path' : 'int' differs in levels of indirection from 'char *' error C2440: 'initializing' : cannot convert from 'char *' to 'int' This conversion requires a reinterpret_cast, a C-style cast or function-style cast How shud i get rid of them .please suggest.

I have to read a property file to get the values from it. I am creating a generic DLL program were I have to put the path for this properties file in such a way that it can be accessed from anywere. At present I am hardcoding it like.. char path[]="c:\properties\file.properties" Now if the dll gets created with this path and the properties file is in another folder. how do I access it. Please help me with some suggestions. I have to make it generic. THANKS.

Please let me know what is the use of appenders that is included in the properties file of log4j. And how it works? THANKS.

I am reading the value of the size from the properties file... e.g. file_size=500. I have to check for the file size limit. The max limit is set as done above. During runtime the following function checks for the file size with the above by using the following function to get the current file size.

int get_file_size()
{
long file_size;
ifstream myfile;
myfile.open(path.c_str());
myfile.seekg(0, ios::end);
file_size = myfile.tellg();
myfile.close();
return file_size;
}

But if I do this I get the file size in bytes. I want to do everything in kb's. Any suggestion please. THANKS.

I got it correct. THANKS.. ;)

on doing that I get the following. error C2664: '__thiscall std::basic_string,class std::allocator >::std::basic_string,class std::allocator >(const cla ss std::allocator &)' : cannot convert parameter 1 from 'bool' to 'const class std::allocator &' Reason: cannot convert from 'bool' to 'const class std::allocator' No constructor could take the source type, or constructor overload resolution was ambiguous I get the same even if I do the way Pallini said. :(