unresolved external symbol in c++ with MS visual studio 9 - c++

Question

My code will be similar to the below code:
class DMLGroup
{
public:
DMLGroup();
~DMLGroup();
void SetName(string name);
private:
string mName;
};
void DMLGroup::SetName(string nm){
mName.assign( nm );
}
int main()
{
string api="API_DML";
DMLGroup * dmlGr = new DMLGroup();
dmlGr->SetName(api.c_str()); //Getting link error with this statement
}
I could able to compile the above code but failed to link using MS visual studio 9 on windows 7 32-bit OS.
Note: I am able to compile, link and run successfully on suselinux-x8664 platform. The problem is only with windows
Please tell me how to resolve this?

Answer 1

The following code compiles & links fine:
#include "stdafx.h"
#include <string>
class DMLGroup
{
public:
DMLGroup() {}
~DMLGroup(){}
void SetName(std::string name);
private:
std::string mName;
};
void DMLGroup::SetName(std::string nm){
mName.assign( nm );
}
int main()
{
std::string api="API_DML";
DMLGroup * dmlGr = new DMLGroup();
dmlGr->SetName(api.c_str()); //Getting link error with this statement
}
What I changed:
#included stdafx.h because it's VS standard - you can turn it off
#includes because it was missing
decorated every use of string with std:: - because most probably you'll use your class definition in a header file and there you simply don't use "using namespace"
supplied default implementation for constructor & destructor
That's all. Check what from the above part is missing or supply an example that exposes the problem & supply the linker error message.