#pragma hdrstop
#pragma argsused
#include "iostream"
#include "fstream"
#include "string"
#include "conio.h"
#include "locale"

using namespace std;

struct Student
    {
    string name;
    int year;
    int numbergroup ;
    int otmetki [3];
    double average;
    };

int main(int argc, char* argv[])
{
    setlocale(LC_ALL,"rus");

    Student  stud [30];
    int d=1;// íîìåð ñòóäåíòà
    int colvo;// êîë-âî ñòóäåíòîâ
    int a;// switch for menu
    int c;// switch for creation
    int sumotmetok=0;
    int b;
    int i;//for str
    char str[30];//ïåðåõîä íà íîâóþ ñòðîêó
    bool otmetka=true;
    const int max=100;
    while(true)
    {
        cout << "Ââåäèòå îïåðàöèþ è âûáèðåòå íîìåð êîìàíäû :\n1)------------Ñîçäàòü--------------\n2)------------Ïðîñìîòð-------------\n";
        cout << "3)------------Êîððåêöèÿ------------\n4)------------Çàäàíèå-------------- \n5)------------Âûõîä---------------- \n";
        cin >> a;
        switch(a)
        {
            system("cls");
            case 1:

                cout << "------------Ñîçäàòü------------\n1)Ââîä ñ êëàâèàòóðû è çàïèñü â ôàéë \n 2)Ââîä èç ôàéëà \n";
                cin >> c;
                switch(c)
                    {
                        case 1:
                        {
                            system("cls");
                            sumotmetok=0;
                            ifstream F("OAIP_file.txt",ios::in);

                            cout << " Ââåäèòå Èìÿ - "<< endl;
                            cin >> stud [d].name;
                            cout << " Ââåäèòå ãîä - "<< endl;
                            cin >> stud [d].year;
                            cout << "Íîìåð ãðóïïû - "<< endl;
                            cin >> stud [d].numbergroup;
                            cout <<" Îòìåòêè - "<< endl;

                            for (b=0;b<4;b++){cin >> stud [d].otmetki [b];}
                            for (b=0;b<4;b++) sumotmetok+=stud [d].otmetki [b];
                            stud [d].average = sumotmetok/4.;// Ñóììà îòìåòîê äåë¸ííàÿ íà 4
                            F.close();
                            d++;
                            system("cls");
                            cout << "Âûïîëíåíî óñïåøíî! \n";
                            break;
                        }

                        case 2:
                        {
                            system("cls");
                            ifstream F("OAIP_file.txt",ios::in);
                            if(!F) {  cout << "Ôàéë íå íàéäåí ! \n "; break;}
                            for (i = 0; str[i] != '\0'; i++)
                            {
                                F >> stud [d].name;
                                F >> stud [d].year;
                                F >> stud [d].numbergroup;
                                for (b=0;b<4;b++) F >> stud [d].otmetki [b];

                                for (b=0;b<4;b++)
                                {
                                    sumotmetok+=stud [d].otmetki [b];
                                    stud [d].average = sumotmetok/4.;
                                }

                                sumotmetok=0;
                                d++;
                            }
                            F.close();
                            system("cls");
                            break;
                        }
                    }

                colvo = d;
                break;

                case 2:
                cout << "------------Ïðîñìîòð------------\n";
                {
                    system("cls");
                    ofstream F("OAIP_file.txt",ios::out);
                    if(!F) { cout << " Ôàéë íå íàéäåí !"; break; }
                    for (d=1;d<=colvo;d++)
                    {
                        cout << stud [d].name << endl << stud [d].year << endl << stud [d].numbergroup << endl;
                        F << stud [d].name << ' ' << stud [d].year << ' '  << stud [d].numbergroup << ' ';
                        for (b=0;b<4;b++)
                        {
                            cout << stud [d].otmetki [b] << " ";
                            F << stud [d].otmetki [b] << ' ';
                        }
                        cout << stud [d].average<< " \n" ;
                        F << stud [d].average;
                    }
                    F.close();
                    getch();
                    break;
                }

                case 3:
                system("cls");
                cout << "------------Êîððåêöèÿ------------\n";
                cout << "Ââåäèåò íîìåð ñòóäåíòà : ";
                cin >> d;
                cout << endl;
                {
                    fstream F("OAIP_file.txt",ios::in);
                    if(!F) break;
                    F >> stud [d].name;
                    F >> stud [d].year;
                    F >> stud [d].numbergroup;
                    for (b=0;b<4;b++) F >> stud [d].otmetki [b];

                    for (b=0;b<4;b++)
                    {
                        sumotmetok+=stud [d].otmetki [b];
                        stud [d].average = sumotmetok/4.;
                    }
                        cout << " Ââåäèòå Èìÿ - ";
                        cin >> stud [d].name ; cout<< endl << " Ââåäèòå ãîä - "; cin >> stud [d].year;
                        cout << endl << "Íîìåð ãðóïïû - "; cin >> stud [d].numbergroup; cout << " Îòìåòêè - ";
                        for (b=0;b<4;b++) cin >> stud [d].otmetki [b];
                        //for (b=0;b<4;b++) sumotmetok+=stud [d].otmetki [b];
                        stud [d].average = sumotmetok/4.;
                    F.close();
                    break;
                }

                case 4:
                {
                int o,nomer,nomerstud = 1;
                system("cls");
                cout << "------------Çàäà÷à------------\n Ââûâåñòè ñòóäåíòîâ-îòëè÷íèêîâ èç èíòåðåñóþùåé âàñ ãðóïïû \n";
                cout << "Ââåäèòå íîìåð ãðóïïû - ";
                cin >> nomer;
                cout << endl;
                for (d=1;d<=colvo;d++)
                {
                    if ( nomer == stud [d].numbergroup )
                    {
                        for ( b=0; b<4; b++ )
                            if ( stud [d].otmetki [b] > 7 )
                                o++;
                        if ( o == 4 )
                        {
                            cout << nomerstud <<" "<< stud [d].name << endl << stud [d].year << endl << stud [d].numbergroup << endl;
                            nomerstud++;
                            for (b=0;b<4;b++)
                                cout << stud [d].otmetki [b] << " ";

                            cout << stud [d].average << " \n" ;
                        }
                    }
                }
                break;
                system("cls");
                }
                case 5:
                exit(0);
            }
        }
    return 0;
}