C++按行读取文本文件，并通过分隔符取值

现需要在C++中读取文本文件txt,txt文件的编码格式为：UTF-8 无BOM格式编码!C++环境的字符集为：使用多字节字符集!

读取代码如下：

#include 
#include
#include


string UTF8ToGB(const char* str)
{
	string result;
	WCHAR *strSrc;
	LPSTR szRes;

	//获得临时变量的大小
	int i = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
	strSrc = new WCHAR[i + 1];
	MultiByteToWideChar(CP_UTF8, 0, str, -1, strSrc, i);

	//获得临时变量的大小
	i = WideCharToMultiByte(CP_ACP, 0, strSrc, -1, NULL, 0, NULL, NULL);
	szRes = new CHAR[i + 1];
	WideCharToMultiByte(CP_ACP, 0, strSrc, -1, szRes, i, NULL, NULL);

	result = szRes;
	delete[]strSrc;
	delete[]szRes;

	return result;
}

vector SplitCString(CString strSource, CString ch)
{
	vector  vecString;
	int iPos = 0;
	CString strTmp;
	strTmp = strSource.Tokenize(ch, iPos);
	while (strTmp.Trim() != _T(""))
	{
		vecString.push_back(strTmp);
		strTmp = strSource.Tokenize(ch, iPos);
	}
	return vecString;
}


vector ReadTxtFile()
{
	char txt[200];
	ifstream infile;
	infile.open("XXX.txt");

	if (!infile.is_open())
	{
		//std::cout << "txt文件打开失败" << endl;
	}
	vector vcs;
	while (!infile.eof())
	{
		infile.getline(txt, 100);
		string msg = UTF8ToGB(txt);
		CString cstr(msg.c_str());
		vcs = SplitCString(cstr, ",");
	
		vector::iterator ita; //声明一个迭代器
		int i = 0;
		for (ita = vcs.begin(), i = 0; ita != vcs.end(); i++, ita++)//v1.begin()指向v1的第一个元素，v1.end()指向最后元素的下一位置
		{
			cout << "vcs中的" << i << "值:" << vcs[i] << endl ;
		}
		//std::cout << msg << endl;
	}
	infile.close();
	return vcs;
}