// ConsoleApplication33.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"


#include<iostream>
#include<string>
using namespace std;
int n;
struct student
{
    long fn;
    char name[30];
    int ar[6];
};

void vhod(student st[])
{
    int i, z;
    do
    {
        cout << "\n Kolko studenti: ";
        cin >> n;
    } while (n<1 || n>25);
    for (i = 0; i<n; i++)
    {
        cout << "\n FN: ";
        cin >> st[i].fn;
        cout << "\n Ime: ";
        cin >> st[i].name;
        cout << "\n Vuvedete tochki ot 30 do 100 za vsichki specialnosti";
        for (z = 0; z<6; z++)
        {
            do
            {
                cout << "\n Vuvedete tochki za " << z + 1 << "-ta specialnost:";
                cin >> st[i].ar[z];
                if (st[i].ar[z]<30 || st[i].ar[z]>100)
                    cout << "\n Greshen vhod";
            } while (st[i].ar[z]<30 || st[i].ar[z]>100);
        }
    }
}

void convert(student st[])
{
    int i, z;
    for (i = 0; i<n; i++)
    {
        for (z = 0; z<6; z++)
        {
            if (st[i].ar[z] >= 30 && st[i].ar[z] <= 49)
                st[i].ar[z] = 2;
            else if (st[i].ar[z] >= 50 && st[i].ar[z] <= 61)
                st[i].ar[z] = 3;
            else if (st[i].ar[z] >= 62 && st[i].ar[z] <= 74)
                st[i].ar[z] = 4;
            else if (st[i].ar[z] >= 75 && st[i].ar[z] <= 88)
                st[i].ar[z] = 5;
            else if (st[i].ar[z] >= 89 && st[i].ar[z] <= 100)
                st[i].ar[z] = 6;
        }
    }
}

void otlichnici(student st[])
{
    int i;
    double s;
    for (i = 0; i<n; i++)
    {
        s = double(st[i].ar[0] + st[i].ar[1] + st[i].ar[2] + st[i].ar[3] + st[i].ar[4] + st[i].ar[5]) / 6;
        if (s >= 5.5)
        {
            cout << endl << "  " << st[i].fn << "\t" << st[i].name << endl;
        }
    }
}

void search(student st[])
{
    int i, z;
    string input;
    long fn1;
    cout << "\n Tursene po FN:";
    cin >> fn1;
    for (i = 0; i<25; i++)
    {
        if (st[i].fn == fn1)
        {
            cout << endl << "  " << st[i].fn << "\t" << st[i].name << endl;
            for (z = 0; z<6; z++)
            {
                cout << st[i].ar[z] << endl;
            }
        }
        else if (st[i].fn != fn1)
        {
            cout << "\n Nqma nameren student s tozi FN";
            cout << "\n Iskate li da dobavite nov student?" << endl << "Da ili Ne?" << endl;
            cin >> input;
            if (input == "Da" || input == "da")
            {
                do
                {
                    cout << "\n FN: ";
                    cin >> st[i + 1].fn;
                    cout << "\n Ime: ";
                    cin >> st[i + 1].name;
                    cout << "\n Vuvedete tochki ot 30 do 100 za vsichki specialnosti";
                    for (z = 0; z<6; z++)
                    {
                        do
                        {
                            cout << "\n Vuvedete tochki za " << z + 1 << "-ta specialnost:";
                            cin >> st[i + 1].ar[z];
                            if (st[i + 1].ar[z]<30 || st[i + 1].ar[z]>100)
                                cout << "\n Greshen vhod";
                        } while (st[i + 1].ar[z]<30 || st[i + 1].ar[z]>100);
                    }
                } while (n<1 || n>25);
            }
            else if (input == "Ne" || input == "ne")
            {
                return; //край на функцията и връщане отново в main
            }
        }
    }
}

void main()
{
    int ch;
    student st[25];
    do
    {
        cout << "\n 1.Input Student";
        cout << "\n 2.Convert the points to grades";
        cout << "\n 3.List students with average exelent grade";
        cout << "\n 4.Search by Fnumber";
        cout << "\n 5.Exit";
        do
        {
            cout << "\n Your choise is: ";
            cin >> ch;
        } while (ch<1 || ch>5);
        switch (ch)
        {
        case 1: vhod(st); break;
        case 2: convert(st); break;
        case 3: otlichnici(st); break;
        case 4: search(st); break;
        }
    } while (ch != 5);
}