ex10vectors

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

using namespace std;

class CPerson
{
    string m_name;
    string m_idn;
public:
    CPerson(string name, string idn) // explicit
    {
        m_name = name;
        m_idn = idn;
    }

    bool operator < (CPerson &obj) // sortirane v narastvash red
    {
        return m_idn < obj.m_idn;
    }

    bool operator == (CPerson &obj) //tursene po IDN
    {
        return m_idn == obj.m_idn;
    }

    friend ostream &operator <<(ostream &to, CPerson &obj) //izvejdane v potok
    {
        if (&to == &cout)
        {
            cout << obj.m_idn << " " << obj.m_name << endl;
        }
        else
        {
            to << obj.m_name << endl;
            to << obj.m_idn << endl;
        }
        return to;
    }

    friend istream &operator >> (istream &in, CPerson &obj) // vuvejdane v potok
    {
        in >> obj.m_name;
        in >> obj.m_idn;
        return in;
    }

    string get_name() // funkcii za dostup
    {
        return m_name;
    }

    string get_idn()
    {
        return m_idn;
    }
};

class CCity
{
    string m_city;
    vector<CPerson> v; //vektor ot obekti I
public:
    CCity(string fname) //explicit - parameter ime na file - generira izkliuchenie
    {
        fstream file;
        string tempname, tempidn;
        file.open(fname, ios_base::in);
        if (!file)
        {
            throw("Can't open file");
        }
        file >> m_city;
        while (!file.eof())
        {
            file >> tempidn;
            file >> tempname;
            v.push_back(CPerson(tempname, tempidn));
        }
        file.close();
    }

    void Output(ostream &to) // izvejdane na vektora na izhoden potok : predefinirane na operator<<
    {
        to << m_city << endl;
        for (int i = 0; i < v.size(); i++)
        {
            to << v[i];
        }
    }

    vector<CPerson> duplicates() // izchislqva povtoreniqta, vrushta vector I
    {
        vector<CPerson> duplicates;
        for (int i = 0; i < v.size() - 1; i++)
        {
            for (int j = i + 1; j < v.size(); j++)
            {
                if (v[i] == v[j])
                {
                    duplicates.push_back(v[i]);
                }
            }
        }
        unique(duplicates.begin(), duplicates.end());
        return duplicates;
    }

    void RemoveDuplicates() // maha povtoreniq
    {
        sort(v.begin(), v.end());
        auto last = unique(v.begin(), v.end());
        v.erase(last, v.end());
    }

    void removeVector(vector<CPerson> &toRemove) // premahvane ot vektora na elementi
    {
        bool found = false;
        for (int i = 0; i < toRemove.size(); i++) {
            found = false;
            for (int j = 0; j < v.size(); j++)
                if (toRemove[i] == v[j])
                {
                    if (found)
                    {
                        v.erase(v.begin() + j);
                    }
                    else
                    {
                        found = true;
                    }
                }
        }
    }

    friend istream &operator >> (istream &in, CCity &obj) // chetene v potok
    {
        string tempidn, tempname;
        in >> obj.m_city;
        if (&in == &cin)
        {
            cout << "Input IDN: ";
            in >> tempidn;
            cout << "Input name";
            in >> tempname;
            obj.v.push_back(CPerson(tempname, tempidn));
        }
        else
        {
            in >> tempidn >> tempname;
            obj.v.push_back(CPerson(tempname, tempidn));
        }
        return in;
    }
};


int main()
{
    try
    {
        CCity obj("temp.txt");
        cout << "Original values: " << endl;
        obj.Output(cout);
        cout << "Done!" << endl;

        cout << "\nDeleting duplicate values: " << endl;
        //obj.removeVector(obj.duplicates());
        obj.RemoveDuplicates();
        cout << "Done!" << endl;

        cout << "\nVector without the duplicates: " << endl;
        obj.Output(cout);
    }
    catch (string str)
    {
        cout << str << endl;
    }

    _getch();

}