fio.cpp

#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <string>
#include <conio.h>

using namespace std;

int main(int argc, char *argv[]) {

    string x = "This is C++.";
    ofstream of("d:/tester.txt");
    of << x << endl;
    of << x << "2";
    of.close();

    vector<string> list;

    ifstream in_stream;

    string line;

    in_stream.open("d:/tester.txt");

    int count = 0;
    while (!in_stream.eof())
    {
        ++count;
        std::getline(in_stream, line);
        list.push_back(line);
        cout << count << " " << line << endl;
    }

    in_stream.close();

    sort(list.begin(), list.end());

    _getch();

    return 0;

}