从同一文件读取和写入?

我在文件中存储了一些数据，但是之后

if (titlemap.count(words[i]( == 1(

达到我重新打开文件并读取向量中的所有数据，然后存储更新的数据，但 但实际上该程序不会进入下面的循环。

for (int j = 0; j

// Cmarkup1.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include"Markup.h"
#include <msxml.h>
#include <ctime>
#include <unordered_map>
#include <cctype>
#include <string>
#include <functional>
#include <algorithm>
#include "functions.h"
#include <map>
#include <fileapi.h>
using namespace std;
int main()
{
// Open the file for parsing.
ofstream wfile("title.txt");
bool check = false;
string delimiter = " ,:,";
int results = 0, pages = 1;
time_t timer;
timer = clock();
CMarkup xmlfile;
unordered_map<string, string> titlemap;
unordered_map<string, string> textmap;
vector <string> words;
xmlfile.Load(MCD_T("simplewiki-latest-pages-articles.xml"));
xmlfile.FindElem();
xmlfile.IntoElem();
int line=0;
while (xmlfile.FindElem(MCD_T("page"))) {
xmlfile.IntoElem();
xmlfile.FindElem(MCD_T("title"));
MCD_STR(title);
title = xmlfile.GetData();
string str(title.begin(), title.end());
transform(str.begin(), str.end(), str.begin(), ::tolower);
split(words, str, is_any_of(delimiter));
for (int i = 0; i < words.size(); i++) {
if (titlemap.count(words[i]) == 1) {
ifstream rfile;
rfile.open("title.txt");
vector<string> vec;
string line;
while (getline(rfile, line)) {
vec.push_back(line);
}
for (int j = 0; j < vec.size(); j++) {
if (words[i] == vec[j]) {
cout << vec[j] <<"Checking"<< endl;
wfile << vec[j] << ",page" << pages << endl;
}
else
wfile << vec[j] << endl;
//wfile.close();
}
}
else {
//wfile.open("title.txt");
keeponlyalphabets(words[i]);
titlemap.insert(make_pair(words[i], words[i]));
wfile << words[i] <<"-page"<<pages<< endl;
++line;
}
}
words.clear();
//cout << str << endl;
//xmlfile.FindElem(MCD_T("text"));
//MCD_STR(text);
//text = xmlfile.GetData();
//string str1(text.begin(), text.end());
//transform(str1.begin(), str1.end(), str1.begin(), ::tolower);
//str1 = keeponlyalphabets(str1);
//removestopwords(str1);
//textmap.insert(make_pair(str1, str1));
//cout << str1 << endl;
if (pages > 100)
break;
pages++;
xmlfile.OutOfElem();

}
wfile.close();
//  for (auto it : titlemap)
//  cout << it.first << endl;
cout << "Total lines are as:  "<<line << endl;
/*string input;
cout << "press s to seach the data" << endl;
getline(cin, input);
if (input == "s") {
string key;
cout << "Enter Key" << endl;
cin >> key;
transform(key.begin(), key.end(), key.begin(), ::tolower);
size_t temp;
cout << endl;
for (auto it = data.begin(); it != data.end(); it++) {
//temp = it->first.find(key);
//cout << temp;
if (it->first.find(key) != std::string::npos) {
cout << it->second << endl;
results++;
}
}
}
else
cout << "Invalid Character Exiting....." << endl;
timer = clock() - timer;
cout << "Total time taken by the process is:  " << (float)timer / CLOCKS_PER_SEC << endl;
cout << " Total Results : " << results << endl;
*/
return 0;
}