string类问题求助

[saltyfisher]

class Text_Editor
{
private:
	typedef vector<string> Line;
	typedef vector<Line> Page;
	typedef vector<Page> Text;
	string content;
	int page_count;
	int line_count;
public:
	Line line;
	Page page;
	Text text;
public:
	Text_Editor();
	Text_Editor(string&);
	Text_Editor(ifstream&);
	bool sort();
	bool destroy();
	void retrive();
	friend string::iterator &Goto(Text_Editor&, int, int, int);
	string::iterator &insert(string::iterator&, string::iterator&, string::iterator&);
	string::iterator &erase(string::iterator&, string::iterator&);
	string::iterator &erase(string::iterator&);
	string ©s(string::iterator&, string::iterator&);
	string::iterator &paste(string::iterator&, string::iterator&, string::iterator&, string::iterator&);
	friend std::ostream& operator<<(std::ostream&, Text_Editor&);
};
Text_Editor::Text_Editor()
{
	line_count = page_count = 0;
}
Text_Editor::Text_Editor(string &s)
{
	line_count = page_count = 0;
	swap(content,s);
	sort();
}
Text_Editor::Text_Editor(ifstream &fin)
{
	while (getline(fin, content));
	sort();
}
bool Text_Editor::sort()
{
	int i = 0;
	int j = 0;
	if (!text.empty())
		text.clear();
	auto temp_begin = content.begin();
	auto temp_end = content.begin();
	for (; j < content.size(); j++)
	{
		if (content[j] == '\n' || j%70 == 0||content.size()-j==0)
		{
			line_count++;
			temp_end += j;
			string stemp(temp_begin, temp_end);
			line.push_back(stemp);
			page.push_back(line);
			temp_begin += stemp.size();
			stemp.clear();
			line.clear();
			temp_end = content.begin();
			i++;
			if (i % 20 == 0||j==content.size())
			{
				page_count++;
				text.push_back(page);
				page.clear();
			}
		}
	}
	return true;
}
bool Text_Editor::destroy()
{
	text.clear();
}
string::iterator &Goto(Text_Editor &te, int npage, int nline, int nstr)
{
	int len = 0;
	for (Text_Editor::Text::iterator ttemp = te.text.begin(); ttemp < te.text.begin() + npage; ttemp++)
	{
		if (ttemp != te.text.begin() + npage)
		{
			for (Text_Editor::Page::iterator ptemp = ttemp->begin(); ptemp != ttemp->end(); ptemp++)
			{
				Text_Editor::Line::iterator ltemp = ptemp->begin();
				string stemp(ltemp->begin(), ltemp->end());
				len += stemp.size();
			}
		}
		else
		{
			for (Text_Editor::Page::iterator ptemp = ttemp->begin(); ptemp < ttemp->begin() + nline; ptemp++)
			{
				if (ptemp != ttemp->begin() + nline)
				{
					Text_Editor::Line::iterator ltemp = ptemp->begin();
					string stemp(ltemp->begin(), ltemp->end());
					len += stemp.size();
				}
				else
					len += nstr;
			}
		}
	}
	return te.content.begin() + len;
}
string::iterator &Text_Editor::insert(string::iterator& pos, string::iterator& str_begin, string::iterator& str_end)
{
	pos = content.insert(pos, str_begin, str_end);
	content.begin();
	content.end();
	sort();
	return pos;
}
string::iterator &Text_Editor::erase(string::iterator& begin, string::iterator& end)
{
	end = content.erase(begin, end);
	content.end();
	sort();
	return end;
}
string::iterator &Text_Editor::erase(string::iterator& str)
{
	str = content.erase(str);
	content.end();
	sort();
	return str;
}
string &Text_Editor::copys(string::iterator& begin, string::iterator& end)
{
	return string(begin, end);
}
string::iterator &Text_Editor::paste(string::iterator& str_begin, string::iterator& str_end, string::iterator& begin, string::iterator& end)
{
	begin = content.insert(content.erase(begin, end), str_begin, str_end);
	content.begin();
	content.end();
	sort();
	return begin;
}
std::ostream &operator<<(std::ostream &os, Text_Editor &te)
{
	int page_count = 0;
	int line_count = 0;
	for (auto ptemp = te.text.begin(); ptemp != te.text.end(); ptemp++)
	{
		for (auto ltemp = ptemp->begin(); ltemp != ptemp->end(); ltemp++)
		{
			string temp(ltemp->begin(), ltemp->end());
			os << temp;
			line_count++;
		}
		page_count++;
		os << page_count << "page " << line_count << "line" << endl;
	}
	return os;
}

编译之后出现的问题：
error C2440: 'type cast' : cannot convert from 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>' to 'char' f:\program files (x86)\microsoft visual studio 12.0\vc\include\xstring 850 1 Text_Editor(Edition2)
error C2664: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>> &std::basic_string<char,std::char_traits<char>,std::allocator<char>>::append(std::_String_const_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_const_iterator<std::_String_val<std::_Simple_types<char>>>)' : cannot convert argument 1 from 'unsigned int' to 'std::initializer_list<_Elem>' f:\program files (x86)\microsoft visual studio 12.0\vc\include\xstring 850 1 Text_Editor(Edition2)
实在找不出来，请各位帮忙！

[苏叔叔]

你双击错误提示，看看错在哪一行？

[saltyfisher]

引用 1 楼 zhangxiangDavaid 的回复:

你双击错误提示，看看错在哪一行？

双击之后会进到一个xstring文件里 _TRY_BEGIN for (; _First != _Last; ++_First) append((size_type)1, (_Elem)*_First); _CATCH_ALL _Tidy(true); _RERAISE; _CATCH_END

[jiht594]

删代码, 一个函数一个函数试吧, 看看到底哪句出问题了

[saltyfisher]

引用 3 楼 jiht594 的回复:

删代码, 一个函数一个函数试吧, 看看到底哪句出问题了

问题找到了，多谢提醒！