void 写入文本(string 文件名, string 内容)
{
	std::ofstream 文件(文件名, std::ios::app);
	文件 << 内容;
}
void 读取文本(string 文件名, string& 内容)
{
	string 读 = ""; int 正数 = 0, 负数 = 0;
	std::ifstream 文件(文件名);
	if (!文件.eof())
	{
		while (getline(文件, 读))
			if (atoi(读.c_str())>0)正数 += atoi(读.c_str());
			else 负数 += atoi(读.c_str());
		//cout << 正数 << "正负" << 负数 << endl; //不包括每行的换行符
		内容 = "正数" + to_string(正数) + "负数" + to_string(负数);
		文件.close();
	}
	else
		cout << "温馨小提示，麻油此文件" << endl;
}


	string 读文本 = "D:\\DW visual studio 2017\\Projects\\C++2013";
	读取文本("..\\Debug\\回复专用\\数字例子.txt", 读文本);
	cout << 读文本 << endl;

	string rm[12] = { "Jan", "Feb", "Mar", "Apr", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec" };
	string t;//缘由https://bbs.csdn.net/topics/396241391?page=1#post-411092125
	int  month;
	int  year;
	int  day;
	ifstream is("..\\Debug\\回复专用\\日期数据.txt", ios_base::in);
	if (!is.eof())
	{
		char temp[11]{};
		while (is.getline(temp, 11, ';'))
		{
			 cout << temp << endl;
			 t = temp;
			//cout << t << endl;getline(is, t)
			day = stoi(t.substr(0, 2));
			month = stoi(t.substr(3, 2));
			year = stoi(t.substr(6, 4));
			cout << year << " " << rm[month - 1] << " " << day << endl;
		}
	}
	else
	{
		cerr << "error";
		exit(EXIT_FAILURE);
	}

	string t = "缘由https://bbs.csdn.net/topics/396241399";
	char temp[11]{};
	vector<string> arr;
	ifstream is("..\\Debug\\回复专用\\矩阵数据.txt", ios_base::in);
	if (!is.eof())
	{
		while (is.getline(temp, 11, ','))
		{
			 //cout << temp << ends;
			 arr.push_back(string(temp));
		}
		cout << endl;
		std::for_each(arr.begin(), arr.end(), [](const string& n) {cout << n << ends; });
	}
	else
	{
		cerr << "error";
		exit(EXIT_FAILURE);
	}

void txt文件修改后输出到另一个txt文件()
{//缘由https://bbs.csdn.net/topics/396342833
	string 读 = "", 内容 = "", 临时 = "";
	int 位置 = 0;
	std::ifstream 读文件("..\\Debug\\回复专用\\原始数据.txt");
	std::ofstream 写文件("..\\Debug\\回复专用\\整理原始数据.txt", std::ios::app);
	if (!读文件.eof())
	{
		while (getline(读文件, 读))
		{
			读.replace(读.find(' '), 1, ",");
			while ((位置 = 读.find(',')) != string::npos)
			{
				临时 = 读.substr(0, 位置);
				内容 += 临时.substr(2);
				读 = 读.substr(++位置);
			}
			while ((位置 = 读.find('"')) != string::npos)读.replace(位置, 1, "");
			内容 += "\n" + 读 + "\n";
			写文件 << 内容;
			内容 = "";
		}
		读文件.close();
		cout << "数据转换完成！" << endl;
	}
	else
		cout << "温馨小提示，麻油此文件" << endl;
}

	std::ifstream 读文件("..\\Debug\\回复专用\\捐款数据.txt");
	int  n;//缘由https://bbs.csdn.net/topics/396510443
	(读文件 >> n).get();
	vector<donor> ar(n);
	for (int i = 0; i<n; ++i)//文本文件能成功打开，但是这里为啥读不到里面的数据？？？？
	{
		getline(读文件, ar[i].name);
		(读文件 >> ar[i].money).get();
	}
	cout << "Grand Patrons:" << endl;
	int m = 0;
	for (int i = 0; i<n; ++i)
		if (ar[i].money >= 10000)
		{
			cout << ar[i].name << ends << ar[i].money << endl;
			++m;
		}
	if (m == 0)
		cout << "None!" << endl;
	m = 0;
	cout << "Patrons:" << endl;
	for (int i = 0; i<n; ++i)
		if (ar[i].money<10000)
		{
			cout << ar[i].name << ends << ar[i].money << endl;
			++m;
		}
	if (m == 0)
		cout << "None!" << endl;
	读文件.close();