ATL / WTL / STL

std::getline(stream, buf,'\n');

18>SimpleMCSFile.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > & __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::operator+=(char)" (__imp_??Y?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@D@Z) referenced in function "class std::basic_istream<char,struct std::char_traits<char> > & __cdecl std::getline<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_istream<char,struct std::char_traits<char> > &&,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > &,char)" (??$getline@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@YAAAV?$basic_istream@DU?$char_traits@D@std@@@0@$$QAV10@AAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@D@Z)

// Console.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <tchar.h>
#include <string>
#include <sstream>
#include <iostream>

int _tmain(int argc, _TCHAR* argv[])
{
	using namespace std;

	// The source stream.
	string source = "First line\nSecond line\n";
	istringstream iss(source);

	// Print out stream line by line.
	string line;
	while (getline(iss, line))
	{
		cout << line << endl;
	}

	cout << endl;

	return 0;
}