1-2 курс (сорян, лень разбирать) / CourseWork_0391_Chashchin_Denis

#include <iostream>
#include <fstream>
#include <cstring>
#include <conio.h>
#include <string>

using namespace std;

struct list
{
    char fio[50];
    int ocenki[5];
    int step;
    list* next;
    float umm;
    bool ploh = false;
};

struct group
{

    list* top = nullptr;
    list* back = nullptr;
    group* next;
    int ngroup;
    float neumn;

};


void ConsoleInput(group*& top, group*& back, char fio[50], int ngr)
{
    group* buf = nullptr, * buf2 = nullptr;
    if (back == nullptr)
    {
        back = new group;
        top = back;
        top->next = nullptr;
        back->ngroup = ngr;
        back->top = new list;
        back->back = back->top;
        strcpy_s(back->back->fio, fio);
        ConsoleAddInfo(back);
        top->back->next = nullptr;
    }
    else if (ngr < top->ngroup)
    {
        buf = new group;
        buf->next = top;
        top = buf;
        top->ngroup = ngr;
        top->top = new list;
        top->back = top->top;
        strcpy_s(top->back->fio, fio);
        ConsoleAddInfo(top);
        top->back->next = nullptr;
    }
    else if (ngr > back->ngroup)
    {
        back->next = new group;
        back = back->next;
        back->ngroup = ngr;
        back->top = new list;
        back->back = back->top;
        strcpy_s(back->back->fio, fio);
        ConsoleAddInfo(back);
        back->back->next = nullptr;
        back->next = nullptr;
    }
    else
    {
        buf = top;
        while (true)
        {
            if (buf->ngroup == ngr)
            {
                buf->back->next = new list;
                buf->back = buf->back->next;
                strcpy_s(buf->back->fio, fio);
                ConsoleAddInfo(buf);
                buf->back->next = nullptr;
                break;
            }
            else if (buf->next == nullptr)
                break;
            else if (ngr < buf->next->ngroup)
            {
                buf2 = buf->next;
                buf->next = new group;
                buf->next->next = buf2;
                buf = buf->next;
                buf->ngroup = ngr;
                buf->top = new list;
                buf->back = buf->top;
                strcpy_s(buf->back->fio, fio);
                ConsoleAddInfo(buf);
                buf->back->next = nullptr;
                break;
            }
            buf = buf->next;
        }
    }
}

void FileInput(group*& top, group*& back, char fio[50], int ngr)
{
    group* buf = nullptr, * buf2 = nullptr;
    ifstream fin("input.txt", ios_base::in);
    if (fin)
    {
        fin.getline(fio, 50);
        fin >> ngr;
        while (fio[0] != '0')
        {
            if (back == nullptr)
            {
                back = new group;
                top = back;
                top->next = nullptr;
                back->ngroup = ngr;
                back->top = new list;
                back->back = back->top;
                strcpy_s(back->back->fio, fio);
                for (int i = 0; i < 5; i++)
                    fin >> back->back->ocenki[i];
                fin >> back->back->step;
                top->back->next = nullptr;
            }
            else if (ngr < top->ngroup)
            {
                buf = new group;
                buf->next = top;
                top = buf;
                top->ngroup = ngr;
                top->top = new list;
                top->back = top->top;
                strcpy_s(top->back->fio, fio);
                for (int i = 0; i < 5; i++)
                    fin >> top->back->ocenki[i];
                fin >> top->back->step;
                top->back->next = nullptr;
            }
            else if (ngr > back->ngroup)
            {
                back->next = new group;
                back = back->next;
                back->ngroup = ngr;
                back->top = new list;
                back->back = back->top;
                strcpy_s(back->back->fio, fio);
                for (int i = 0; i < 5; i++)
                    fin >> back->back->ocenki[i];
                fin >> back->back->step;
                back->back->next = nullptr;
                back->next = nullptr;
            }
            else
            {
                buf = top;
                while (true)
                {
                    if (buf->ngroup == ngr)
                    {
                        buf->back->next = new list;
                        buf->back = buf->back->next;
                        strcpy_s(buf->back->fio, fio);
                        for (int i = 0; i < 5; i++)
                            fin >> buf->back->ocenki[i];
                        fin >> buf->back->step;
                        buf->back->next = nullptr;
                        break;
                    }
                    else if (buf->next == nullptr)
                        break;
                    else if (ngr < buf->next->ngroup)
                    {
                        buf2 = buf->next;
                        buf->next = new group;
                        buf->next->next = buf2;
                        buf = buf->next;
                        buf->ngroup = ngr;
                        buf->top = new list;
                        buf->back = buf->top;
                        strcpy_s(buf->back->fio, fio);
                        for (int i = 0; i < 5; i++)
                            fin >> buf->back->ocenki[i];
                        fin >> buf->back->step;
                        buf->back->next = nullptr;
                        break;
                    }
                    buf = buf->next;
                }
            }

            fin.getline(fio, 50);
            fin.getline(fio, 50);
            fin >> ngr;
        }
        fin.close();
    }
}

void ConsoleAddInfo(group*& buf)
{
    cout << "Введите  набор из пяти оценок за последнюю сессию " << endl;
    for (int i = 0; i < 5; i++)
        cin >> buf->back->ocenki[i];
    cout << "Введите размер стипендии " << endl;
    cin >> buf->back->step;
}


void editStudentInfo(group*& top, group*& back, char fio[50])
{
    list* buf2 = nullptr, * buf3 = nullptr;
    group* buf = nullptr, * buf1 = nullptr;
    int change, change1, ngr;
    cout << "Введите имя студента " << endl;
    cin.getline(fio, 50);
    cin.getline(fio, 50);
    cout << "Введите номер группы " << endl;
    cin >> ngr;
    cout << "1-Удаление студента из списка " << endl;
    cout << "2-Добавление студента " << endl;
    cout << "3-Редактирование данных о студенте" << endl;
    cout << "4-Выход " << endl;
    cout << "Ваш выбор(1-3) " << endl;
    cin >> change;
    buf = top;
    switch (change)
    {
    case 1:
        while (buf != nullptr)
        {
            if (buf->ngroup == ngr)
            {
                buf2 = buf->top;
                if (strcmp(buf2->fio, fio) == 0)
                {
                    buf2 = buf->top;
                    buf->top = buf2->next;
                    delete buf2;
                    return;
                }
            }
            else
            {
                buf = buf->next;
                continue;
            }
            while (buf2->next != nullptr)
            {
                if (strcmp(buf2->next->fio, fio) == 0)
                {
                    if (buf2->next == buf->back)
                    {
                        buf->back = buf2;
                        buf3 = buf2->next;
                        buf2->next = nullptr;
                        delete buf3;
                        return;
                    }
                    buf3 = buf2->next;
                    buf2->next = buf3->next;
                    delete buf3;
                    return;
                }
                buf2 = buf2->next;
            }

        }
        cout << "Студент удален " << endl;
        break;
    case 2:
        ConsoleInput(top, back, fio, ngr);
        cout << "Студент добавлен " << endl;
        break;
    case 3:
        cout << "1-Изменить группу " << endl;
        cout << "2-Изменить оценки " << endl;
        cout << "3-Изменить стипендию " << endl;
        cout << "4-Выход " << endl;
        cout << "Ваш выбор(1-3)" << endl;
        cin >> change1;
        switch (change1)
        {
        case 1:
            cout << "Введите номер группы " << endl;
            while (buf != nullptr)
            {
                if (ngr == buf->ngroup)
                {
                    buf2 = buf->top;
                    if (strcmp(buf2->fio, fio) == 0)
                    {
                        buf3 = buf2;
                        buf->top = buf2->next;
                    }
                    while (buf2->next != nullptr)
                    {
                        if (strcmp(buf2->next->fio, fio) == 0)
                        {
                            buf3 = buf2->next;
                            buf2->next = buf3->next;
                            if (buf->back = buf3)
                            {
                                buf->back = buf2;
                            }
                        }
                        buf2 = buf2->next;
                    }
                }
                buf = buf->next;
            }
            cin >> ngr;
            if (buf3 == nullptr)
                cout << "1";
            else if (ngr < top->ngroup)
            {
                buf = new group;
                buf->next = top;
                top = buf;
                top->ngroup = ngr;
                top->top = buf3;
                buf3->next = nullptr;
                return;
            }
            else if (ngr > back->ngroup)
            {
                back->next = new group;
                back = back->next;
                back->ngroup = ngr;
                back->top = buf3;
                buf3->next = nullptr;
                return;
            }
            else
            {
                buf = top;
                while (1)
                {
                    if (buf->ngroup == ngr)
                    {
                        buf->back->next = buf3;
                        buf3->next = nullptr;
                        break;
                    }
                    else if (buf->next == nullptr)
                        break;
                    else if (ngr < buf->next->ngroup)
                    {
                        buf1 = buf->next;
                        buf->next = new group;
                        buf->next->next = buf1;
                        buf = buf->next;
                        buf->ngroup = ngr;
                        buf->top = buf3;
                        buf->back = buf->top;
                        buf->back->next = nullptr;
                        break;
                    }
                    buf = buf->next;
                }
            }
            break;

        case 2:
            buf = top;
            cout << "Введите оценки " << endl;
            while (buf != nullptr)
            {
                buf2 = buf->top;
                while (buf2 != nullptr)
                {
                    if (strcmp(buf2->fio, fio) == 0)
                    {
                        for (int i = 0; i < 5; i++)
                        {

                            cin >> buf2->ocenki[i];
                            return;
                        }
                    }
                    buf2 = buf2->next;
                }
                buf = buf->next;
            }
            break;
        case 3:
            cout << "Введите стипендию " << endl;
            while (buf != nullptr)
            {
                buf2 = buf->top;
                while (buf2 != nullptr)
                {
                    if (strcmp(buf2->fio, fio) == 0)
                    {
                        cin >> buf2->step;
                    }
                    buf2 = buf2->next;
                }
                buf = buf->next;
            }
            break;
        case 4:
            break;

        }
        return;
        buf2 = buf2->next;
        buf = buf->next;
    case 4:
        break;
    }

}

void task1(group* top)    //Вывести в порядке следования номеров групп фамилии тех студентов, у которых личный средний балл не превышает заданного значения
{
    list* buf = nullptr;
    group* buf1 = nullptr;
    float pc;
    cout << "Введите значение " << endl;
    cin >> pc;
    float n = 0;
    buf1 = top;

    while (buf1 != nullptr)
    {
        buf = buf1->top;
        while (buf != nullptr)
        {
            n = 0;
            for (int i = 0; i < 5; i++)
            {
                buf->umm += buf->ocenki[i];
            }
            buf->umm = buf->umm / 5;
            buf = buf->next;

        }

        buf1 = buf1->next;
    }

    buf1 = top;
    while (buf1 != nullptr)
    {
        cout << "Группа " << buf1->ngroup << endl;
        buf = buf1->top;
        if (buf->umm < pc)
        {
            cout << buf1->ngroup << " " << endl;
        }

        buf1 = buf1->next;
    }


}

void task2(group* top)        //Вывести на экран в порядке возрастания номера групп, в которых процент троечников и двоечников превышает заданное с клавиатуры значение
{
    list* buf = nullptr;
    group* buf1 = nullptr;
    float pc;
    cout << "Введите процент хорошистов и отличников " << endl;
    cin >> pc;
    int n = 0, k = 0, s = 0;
    int gg;
    buf1 = top;

    while (buf1 != nullptr)
    {
        buf = buf1->top;
        while (buf != nullptr)
        {
            n = 0;
            s++;
            for (int i = 0; i < 5; i++)
            {
                if (buf->ocenki[i] < 4)
                {
                    n++;
                    break;
                }
                if (n > 1)
                {
                    buf->ploh = true;
                }
                if (buf->ploh == true)
                {
                    k++;
                }
            }
            buf = buf->next;
        }

        buf1->neumn = k / s * 100;
        buf1 = buf1->next;
    }

    buf1 = top;
    while (buf1 != nullptr)
    {
        if (buf1->neumn > pc)
        {
            cout << buf1->ngroup << " " << endl;
        }

        buf1 = buf1->next;
    }
}

void showConsole(group* top)
{
    group* buf = nullptr;
    list* buf1 = nullptr;
    buf = top;
    while (buf != nullptr)
    {
        cout << buf->ngroup << endl;
        buf1 = buf->top;
        while (buf1 != nullptr)
        {
            cout << buf1->fio << std::endl;
            for (int i = 0; i < 5; i++)
            {
                cout << buf1->ocenki[i] << " ";
            }
            cout << endl;
            cout << buf1->step << endl;
            buf1 = buf1->next;
        }
        buf = buf->next;
    }
}

void FileShow(group* top)
{
    group* buf = nullptr;
    list* buf1 = nullptr;
    ofstream fout("output.txt");
    if (fout)
    {
        buf = top;
        while (buf != nullptr)
        {
            fout << "Группа " << buf->ngroup << endl;
            buf1 = buf->top;
            while (buf1 != nullptr)
            {
                fout << buf1->fio << endl;
                for (int i = 0; i < 5; i++)
                {
                    fout << buf1->ocenki[i] << " ";
                }
                fout << endl;
                fout << buf1->step << endl;
                buf1 = buf1->next;
            }
            buf = buf->next;
        }
        fout.close();
    }
}

void DelGroup(group*& top, group*& back)
{
    int ngr;
    cout << "Введите номер группы для удаления " << endl;
    cin >> ngr;
    group* buf = nullptr, * buf1 = nullptr;
    list* buf2 = nullptr, * buf3 = nullptr;
    buf = top;
    while (buf != nullptr)
    {
        if (top->ngroup == ngr)
        {
            buf2 = top->top;
            while (buf2 != nullptr)
            {
                buf3 = buf2->next;
                delete buf2;
                buf2 = buf3;
            }
            top = top->next;
            delete buf;
            break;
        }
        if (buf->next == nullptr)
            break;
        if (buf->next->ngroup == ngr)
        {
            if (buf->next == back)
            {
                back = buf;
                buf1 = buf->next;
                buf2 = buf->next->top;
                while (buf2 != nullptr)
                {
                    buf3 = buf2->next;
                    delete buf2;
                    buf2 = buf3;
                }
                delete buf1;
                buf->next = nullptr;
                break;
            }
            else
            {
                buf1 = buf->next;
                buf->next = buf1->next;
                buf2 = buf1->top;
                while (buf2 != nullptr)
                {
                    buf3 = buf2->next;
                    delete buf2;
                    buf2 = buf3;
                }
                delete buf1;
                break;
            }
        }
        buf = buf->next;
    }
}

int main()
{
    setlocale(LC_ALL, "RUSSIAN");
    group* top = nullptr, * back = nullptr, * buf1 = nullptr;
    list* buf3 = nullptr, * buf2 = nullptr;
    int change = 0;
    int ngr = 0, k, x;
    char fio[50];
    cout << "1-Консольный ввод списка " << endl;
    cout << "2-Файловый ввод списка " << endl;
    cout << "3-Редактирование данных о студенте " << endl;
    cout << "4-Показать список " << endl;
    cout << "5-Удаление группы из списка " << endl;
    cout << "6-Задание №25 " << endl;
    cout << "7-Задание №15 " << endl;
    cout << "8-Файловый вывод " << endl;
    do
    {
        cout << "Ваш выбор " << endl;
        cin >> change;
        switch (change)
        {
        case 1:
            cout << "Введите ФИО студента " << endl;
            cin.getline(fio, 50);
            cin.getline(fio, 50);
            cout << "Введите номер группы " << endl;
            cin >> ngr;
            while (fio[0] != '0')
            {
                ConsoleInput(top, back, fio, ngr);
                cout << "Введите ФИО студента " << endl;
                cin.getline(fio, 50);
                cin.getline(fio, 50);
                cout << "Введите номер группы " << endl;
                cin >> ngr;
            }
            break;
        case 2:
            FileInput(top, back, fio, ngr);
            break;
        case 3:
            editStudentInfo(top, back, fio);
            break;
        case 4:
            if (top == nullptr)
                cout << "Данные о студентах отсутствуют " << endl;
            else
                showConsole(top);
            break;
        case 5:
            DelGroup(top, back);
            break;
        case 6:
            task1(top);
            break;
        case 7:
            task2(top);
            break;
        case 8:
            FileShow(top);
            break;

        };
    } while (change != 0);

    return 0;
}