ifstream的有关问题

ifstream的问题
ifstream   infile;
infile.open( "D:\1.txt ")
CString   tem;
infile.getline(infile,tem, '\n ');
MessageBox(tem);
有问题吗？

[解决办法]
ifstream infile;
infile.open( "D:\\1.txt ");
char buff[200] = {0};
infile.getline(buff, '\n ');
MessageBox(buff);
infile.close();