#include <iostream>
#include <fstream>
#include <windows.h>
#include <cstdlib>
#include <iomanip>
#include <conio.h>
using namespace std;
const char* file = "jurnal";
char* r(char* buf);
char a[256];
char* r(char* b)
{
    CharToOem(b, a);
    return a;
}
inline void eatline()
{
    while (cin.get() != '\n')
        continue;
}
struct Stud {
    int number;
    char fam[15];
    char name[15];
    char otchestvo[15];
    double istor_bel;
    double informatic;
    double fizika;
    double matem;
    double bel_yz;
    double bel_lit;
    double rus_yz;
    double rus_lit;
    double chog;
    double in_yz;
    double fizra;
    double biologia;
    double geografiy;
    double sredni_ball;
};
class Base {
    int a, num, j, b, g;

public:
    Stud ob;
    void menu()
    {
        system("cls");
        cout << r("   Êîíòðîëü óñïåâàåìîñòè ó÷àùèõñÿ Ñع 3\n") << endl;
        cout << r("    1.Ïðîñìîòð") << endl;
        cout << r("     2.Ââîä") << endl;
        cout << r("     3.Ðåäàêòèðîâàíèå") << endl;
        cout << r("    4.Ïîèñê") << endl;
        cout << r("     5.Ñîðòèðîâêà") << endl;
        cout << r("        6.Óäàëåíèå") << endl;
        cout << r("                               7.Âûõîä") << endl;

        a = _getch();
        switch (a) {
        case '1':
            look();
            next();
            break;
        case '2':
            enter();
            next();
            break;
        case '3':
            redac();
            next();
            break;
        case '4':
            poisk();
            next();
            break;
        case '5':
            sort();
            next();
            break;
        case '6':
            delet();
            next();
            break;
        case '7':
            exit(1);
            break;
        default:
            cout << r("Îøèáêà ïîâòîðèòå ââîä!!!");
        }
    }
    void next()
    {
        cout << r("Äëÿ âûõîäà â ãëàâíîå ìåíþ íàæìèòå (1) äëÿ âûõîäà (2)") << endl;
        a = _getch();
        switch (b) {
        case '1':
            menu();
            break;
        case '2':
            exit(1);
        }
    }

    void proverka()
    {
        fstream fil;
        fil.open(file, ios::out | ios::in | ios::binary);
        if (!file) {
            cout << r(" Ôàéë íå íàéäåí !!!") << endl;
            system("pause");
        }
        fil.close();
    }

    void look()
    {
        system("cls");
        Stud ob;
        ifstream in;
        in.open(file, ios::in | ios::binary);
        if (!in) {
            cout << r("Îøèáêà");
        }
        cout << "********************************************************************************" << endl;
        while (in.read((char*)&ob, sizeof ob))
            cout << "|" << setw(2) << ob.number << "|" << setw(10) << ob.fam << "|" << setw(8) << ob.name << "|"
                 << setw(13) << ob.otchestvo << "|" << setw(2) << ob.matem << "|" << setw(2) << ob.bel_yz << "|"
                 << setw(2) << ob.bel_lit << "|" << setw(2) << ob.rus_yz << "|" << setw(2) << ob.rus_lit << "|"
                 << setw(2) << ob.informatic << "|" << setw(2) << ob.in_yz << "|" << setw(2) << ob.chog << "|"
                 << ob.istor_bel << "|" << setw(2) << ob.geografiy << "|" << setw(2) << ob.fizika << "|" << setw(2)
                 << ob.biologia << "|" << setw(2) << ob.fizra << "|" << setw(4)
                 << setprecision(2) << ob.sredni_ball << "|" << endl;
        cout << "***************************************************" << endl;
        in.close();
    }
    void enter()
    {
        Stud ob;
        ofstream out;
        out.open(file, ios::out | ios::app | ios::binary);
        if (!out) {
            cout << r("Îøèáêà");
        }
        system("cls");
        cout << r("Ëè÷íûé íîìåð:");
        cin >> ob.number;
        eatline();
        cout << r("Ôàìèëèÿ:");
        cin.getline(ob.fam, 15);
        cout << r("Èìÿ:");
        cin.getline(ob.name, 15);
        cout << r("Îò÷åñòâî:");
        cin.getline(ob.otchestvo, 15);

        cout << r("Ìàòåìàòèêà:");
        cin >> ob.matem;

        cout << r("Áåëîðóññêèé ÿçûê:");
        cin >> ob.bel_yz;
        cout << r("Áåëîðóññêàÿ ëèòåðàòóðà:");
        cin >> ob.bel_lit;
        cout << r("Ðóññêèé ÿçûê:");
        cin >> ob.rus_yz;
        cout << r("Ðóññêàÿ ëèòåðàòóðà:");
        cin >> ob.rus_lit;
        cout << r("Èíîñòðàííûé ÿçûê:");
        cin >> ob.in_yz;
        cout << r("Èíôîðìàòèêà:");
        cin >> ob.informatic;
        cout << r("Ôèçèêà:");
        cin >> ob.fizika;
        cout << r("Èñòðîðèÿ Áåëàðóñè:");
        cin >> ob.istor_bel;
        cout << r("×.Î.Ã:");
        cin >> ob.chog;
        cout << r("Ãåîãðàôèÿ:");
        cin >> ob.geografiy;
        cout << r("Áèîëîãèÿ:");
        cin >> ob.biologia;
        cout << r("Ô-ðà:");
        cin >> ob.fizra;

        ob.sredni_ball = (ob.matem + ob.bel_yz + ob.informatic + ob.bel_lit + ob.in_yz + ob.rus_yz + ob.rus_lit + ob.biologia + ob.istor_bel + ob.chog + ob.fizika + ob.fizra + ob.geografiy) / 13;
        eatline();
        out.write((char*)&ob, sizeof ob);
        out.close();
        system("pause");
    }
    void poisk()
    {
        system("cls");
        int temp;
        Stud ob;
        fstream poisk(file, ios::in | ios::binary);
        look();
        cout << r("Ïîèñê ïî ëè÷íîìó íîìåðó:") << endl;
        cin >> temp;
        eatline();
        while (true) {
            poisk.read((char*)&ob, sizeof(Stud));
            if (poisk.eof()) {
                cout << "net " << temp << endl;
                return;
            }
            if (temp == ob.number) {
                cout << "*****************************************************************************" << endl;

                cout << "|" << setw(2) << ob.number << "|" << setw(10) << ob.fam << "|" << setw(8) << ob.name << "|"
                     << setw(13) << ob.otchestvo << "|" << setw(2) << ob.matem << "|" << setw(2) << ob.bel_yz << "|"
                     << setw(2) << ob.bel_lit << "|" << setw(2) << ob.rus_yz << "|" << setw(2) << ob.rus_lit << "|"
                     << setw(2) << ob.informatic << "|" << setw(2) << ob.in_yz << "|" << setw(2) << ob.chog << "|"
                     << ob.istor_bel << "|" << setw(2) << ob.geografiy << "|" << setw(2) << ob.fizika << "|" << setw(2)
                     << ob.biologia << "|" << setw(2) << ob.fizra << "|" << setw(4)
                     << setprecision(2) << ob.sredni_ball << "|" << endl;
                cout << "*****************************************************************************" << endl;
                return;
            }
        }
    }
    void sort()
    {
        system("cls");
        fstream sort;
        sort.open(file, ios::in | ios::binary);
        Stud ob[1000];
        Stud tem;
        int count = 0;

        while (!sort.eof()) {
            sort.read((char*)&ob[count], sizeof(Stud));
            count++;
        }
        count--;
        cout << r("Ñîðòèðîâêà ïî:\n1 -Ëè÷íîìó íîìåðó\n2 - Ïî ôàìèëèå\nÇ - Ñðåäíåìó áàëëó: ");
        int a;
        cin >> a;
        eatline();
        if (a == 1) {
            for (int i = 0; i < count; i++)
                for (int j = 0; j < count; j++) {
                    if (ob[i].number < ob[j].number) {
                        tem = ob[i];
                        ob[i] = ob[j];
                        ob[j] = tem;
                    }
                }
            if (a == 2)
                for (int i = 0; i < count; i++)
                    for (int j = 0; j < count; j++)

                        if (ob[i].fam[0] < ob[j].fam[0]) {
                            tem = ob[i];
                            ob[i] = ob[j];
                            ob[j] = tem;
                        }
        }

        else if (a == 3)
            for (int i = 0; i < count; i++)
                for (int j = 0; j < count; j++)
                    if (ob[i].sredni_ball < ob[j].sredni_ball) {
                        tem = ob[i];
                        ob[i] = ob[j];
                        ob[j] = tem;
                    }
        sort.close();
        sort.clear();
        sort.open(file, ios::out | ios::binary);
        for (a = 0; a < count; a++)
            sort.write((char*)&ob[a], sizeof(Stud));
        sort.close();
    }
    //////////////////////////////////////////////////
    void redac()

    {
        system("cls");
        int t = 0;
        Stud ob[1000];
        fstream del;
        del.open(file, ios::in | ios::out | ios::binary);
        if (!del.is_open()) {
            cout << r("Îøèáêà!!!") << endl;
            exit(1);
        }
        int count = 0;
        while (!del.eof()) {
            del.read((char*)&ob[count], sizeof(Stud));
            count++;
        }
        look();
        count--;
        cout << r("Ââåäèòå ëè÷íûé íîìåð ó÷åíèêà  äëÿ ðåäàêòèðîâàíèÿ: ");
        double number;
        cin >> number;
        del.close();
        del.clear();
        del.open(file, ios::out | ios::binary);
        for (int x = 0; x < count; x++)
            if (ob[x].number != number)
                del.write((char*)&ob[x], sizeof(Stud));
        enter();
        del.close();
    }

    void delet()
    {
        system("cls");
        int t = 0;
        Stud ob[1000];
        fstream del;
        del.open(file, ios::in | ios::out | ios::binary);
        if (!del.is_open()) {
            cout << r("Îøèáêà!!!") << endl;
            exit(1);
        }
        int count = 0;
        while (!del.eof()) {
            del.read((char*)&ob[count], sizeof(Stud));
            count++;
        }
        look();
        count--;
        cout << r("Ââåäèòå ëè÷íûé íîìåð ó÷åíèêà êàòîðîãî íàäî óäàëèòü: ");
        double number;
        cin >> number;
        del.close();
        del.clear();
        del.open(file, ios::out | ios::binary);
        for (int x = 0; x < count; x++)
            if (ob[x].number != number)
                del.write((char*)&ob[x], sizeof(Stud));
        del.close();
    }
};
int main()
{
    Base ob;
    ob.proverka();
    while (1) {
        ob.menu();
    }
    return 0;
}