VC++ 错误及解决方案录
VC++ 错误及解决方案录2008－10－17：error C2079: 'file' uses undefined class 'std::basic_fstream'The fstream class is defined in the fstream header. Try adding a #include .http://social.msdn.microsoft.com/Forums/en-US/vclanguage/thread/0b6174ad-bcfd-4863-b83f-bf
