读取txt文件的c++程序将特定数据从txt文件中摘出来

一段读取txt文件的小程序，使用c++编写，经测试安全可用

#include “pch.h“
#include 
#include 
#include 
using namespace std;
int main（）
{
	vector a;
	vector b;
	vector c;
	int j = 0;
	int k = 0;

	char buff;
	ifstream in（“读入.txt“）;
	ofstream out1（“输出x.txt“）;
	ofstream out2（“输出y.txt“）;
	while （!in.eof（））
	{
		in >> buff;
		a.push_back（buff）;


	}
	for （int i = 0; i < a.size（）; i++）
	{

		if （a[i] == ‘X‘）

		{
			
			do
			{
				i++;
				b.push_back（a[i]）;
				cout << b[j];
				out1 << b[j];
				j++;


			} while （!（a[i + 1] == ‘Y‘））;
			cout << endl;
			out1 << endl;
		}

		if （a[i] == ‘Y‘）

		{
			
			do
			{
				i++;
				c.push_back（a[i]）;
				cout << c[k];
				out2 << c[k];
				k++;


			} while （!（a[i + 1] == ‘E‘））;
			cout << endl;
			out2 << endl;
		}
	}

	in.close（）;
	out1.close（）;
	cin.get（）;

}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    ..A..H.     35328  2018-12-24 09:44  duqutxt3\.vs\duqutxt3\v15\.suo

     文件     133632  2018-12-24 09:42  duqutxt3\Debug\duqutxt3.exe

     文件     714352  2018-12-24 09:42  duqutxt3\Debug\duqutxt3.ilk

     文件     675840  2018-12-24 09:42  duqutxt3\Debug\duqutxt3.pdb

     文件        243  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.log

     文件     382749  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.obj

     文件    2031616  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.pch

     文件       1714  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\CL.command.1.tlog

     文件      20160  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\CL.read.1.tlog

     文件       1270  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\CL.write.1.tlog

     文件        220  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\duqutxt3.lastbuildstate

     文件       2298  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\link.command.1.tlog

     文件       7034  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\link.read.1.tlog

     文件        678  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\duqutxt3.tlog\link.write.1.tlog

     文件       3795  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\pch.obj

     文件     150528  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\vc141.idb

     文件     397312  2018-12-24 09:42  duqutxt3\duqutxt3\Debug\vc141.pdb

     文件       1744  2018-12-24 09:42  duqutxt3\duqutxt3\duqutxt3.cpp

     文件       8406  2018-12-24 09:38  duqutxt3\duqutxt3\duqutxt3.vcxproj

     文件       1156  2018-12-24 09:38  duqutxt3\duqutxt3\duqutxt3.vcxproj.filters

     文件        165  2018-12-24 09:38  duqutxt3\duqutxt3\duqutxt3.vcxproj.user

     文件        188  2018-12-24 09:38  duqutxt3\duqutxt3\pch.cpp

     文件        614  2018-12-24 09:38  duqutxt3\duqutxt3\pch.h

     文件       5411  2018-12-24 09:42  duqutxt3\duqutxt3\读入.txt

     文件       1484  2018-12-24 09:42  duqutxt3\duqutxt3\输出x.txt

     文件       1464  2018-12-24 09:42  duqutxt3\duqutxt3\输出y.txt

     文件       1438  2018-12-24 09:38  duqutxt3\duqutxt3.sln

     目录          0  2019-01-24 20:36  duqutxt3\.vs\duqutxt3\v15

     目录          0  2019-01-24 20:36  duqutxt3\duqutxt3\Debug\duqutxt3.tlog

     目录          0  2019-01-24 20:36  duqutxt3\.vs\duqutxt3

............此处省略8个文件信息