template<class _E, class _Tr, class _A> inline
    basic_istream<_E, _Tr>& __cdecl getline(basic_istream<_E, _Tr>& _I,
        basic_string<_E, _Tr, _A>& _X, const _E _D)
    {typedef basic_istream<_E, _Tr> _Myis;
    ios_base::iostate _St = ios_base::goodbit;
    bool _Chg = false;
    _X.erase();
    const _Myis::sentry _Ok(_I, true);
    if (_Ok)
        {_TRY_IO_BEGIN
        _Tr::int_type _C = _I.rdbuf()->sgetc();
        for (; ; _C = _I.rdbuf()->snextc())
            if (_Tr::eq_int_type(_Tr::eof(), _C))
                {_St |= ios_base::eofbit;
                break; }
            else if (_Tr::eq((_E)_C, _D))
                {_Chg = true;
                _I.rdbuf()->snextc();
				/*
				关键是这个东西用的不好.
				snextc:Advances the get pointer, then returns the next character.
				本来应该是下面这个:
				stossc:Moves the get pointer forward one position, but does not return a character.
				*/
                break; }
            else if (_X.max_size() <= _X.size())
                {_St |= ios_base::failbit;
                break; }
            else
                _X += _Tr::to_char_type(_C), _Chg = true;
        _CATCH_IO_(_I); }
    if (!_Chg)
        _St |= ios_base::failbit;
    _I.setstate(_St);
    return (_I); }

• 还是cin.getline好 (1336) hawk 2005-05-28 12:45:25