C / C++ / MFC

1>Stocks.obj : error LNK2019: unresolved external symbol "public: __thiscall CStringParser::CStringParser(void)" (??0CStringParser@@QAE@XZ) referenced in function "public: __thiscall Stocks::Stocks(void)" (??0Stocks@@QAE@XZ)
1>Stocks.obj : error LNK2019: unresolved external symbol "public: __thiscall CStringParser::~CStringParser(void)" (??1CStringParser@@QAE@XZ) referenced in function "public: __thiscall Stocks::~Stocks(void)" (??1Stocks@@QAE@XZ)

//StringParser.h
#pragma once

/////////////////////////////////////////////////////////////////////////////////////////
//Name:			CStringParser
//Author:		Michal Ciechan
//Date:			2009-06-30
//Features:		A CString parser to parse a string seperated by a 
//				character(c) into a vector
//Usage:		call ParseString method with 2 parameters, first being the string
//				etc("Ping&TestPing&value 3") and the second being the seperator
//				etc("&")
/////////////////////////////////////////////////////////////////////////////////////////

#include <string>
#include <vector>
class CStringParser 
{
public:
	// Constructor
	CStringParser::CStringParser();
	// Destructor
	CStringParser::~CStringParser();
	// Functions
	std::vector<CString> CStringParser::ParseString(CString s, CString c);
};

//StringParser.cpp
#pragma once
#include "StringParser.h"
#include <string>
#include <vector>


// Constructor
CStringParser::CStringParser()
{
}
// Destructor
CStringParser::~CStringParser()
{
}
//Functions
std::vector<CString> CStringParser::ParseString(CString s, CString c /*Seperator*/)
{
............
}

// Test.h
#pragma once
#include "StringParser.h"

class Test
{
public:
	Test(void);
	~Test(void);
private:
	CStringParser sp;
};