#include <iostream>
#include <locale>
#include <fstream>
using namespace std;

fstream fp;

struct girls
{
    char nomer[10];
    float visochina;
    float teglo;
    char ime[30];
    char familiq[30];
    char durjava[30];
    int age;
};

void input(girls f[50])
{
    int N;
    do
    {
        cout << "\t" "Въведи брой на участничките: ";
        cin >> N;

    } while (N < 1 || N > 50);

    for (int i = 0; i < N; i++)
    {
        cout << endl;

        cout << "\n Номер: ";
        cin >> f[i].nomer;
        cout << "\n Име: ";
        cin >> f[i].ime;
        cout << "\n Фамилия: ";
        cin >> f[i].familiq;
        cout << "\n Години: ";
        cin >> f[i].age;
        cout << "\n Височина(В см): ";
        cin >> f[i].visochina;
        cout << "\n Тегло(В кг): ";
        cin >> f[i].teglo;
        cout << "\n Държава: ";
        cin >> f[i].durjava;


    }

    fp.open("miss.dat", ios::binary | ios::out);
    if (!fp)
    {
        cout << "Error";
        exit(1);
    }

    fp.write((char*)f, N * sizeof(girls));
    fp.close();
}

void output(girls f[])
{
    girls miss;
    long position;
    int n;

    cout << "\t" "Всички участнички" << endl;

    fp.open("miss.dat", ios::binary | ios::in);
    if (!fp)
    {
        cout << "Error";
        exit(1);
    }
    fp.seekg(0l, ios::end);
    position = fp.tellg();
    fp.close();

    n = position / (sizeof(girls));

    fp.open("miss.dat", ios::binary | ios::in);
    if (!fp)
    {
        cout << "Error";
        exit(1);
    }

    for (int i = 0; i < n; i++)
    {
        fp.read((char*)&miss, sizeof(girls));
        f[i] = miss;
    }

    for (int i = 0; i < n; i++)
    {
        cout << i + 1 << "." << "\n" << "Номер: " << f[i].nomer << "\n" << "Име: " << f[i].ime << "\n" <<
            "Фамилия: " << f[i].familiq << "\n" <<
            "Години: " << f[i].age << "\n" << "Височина: " << f[i].visochina << "\n" << "Тегло(В кг): " <<
            f[i].teglo << "\n" << "Държава: " << f[i].durjava << "\n";

    }

    fp.close();

    cout << endl;
}

void check(girls f[])
{
    girls miss;
    long position;
    char nomer[30];
    char familiq[30];
    char dur[30];
    int N;// N=pos
    bool flag = 0;
    int S;// spravka

    do
    {
        cout << "\t" "Проверка" << endl;
        cout << "Въведете номер: ";
        cin >> nomer;
        cout << "Въведете фамилия: ";
        cin >> familiq;


        fp.open("miss.dat", ios::binary | ios::in);
        if (!fp)
        {
            cout << "Error";
            exit(1);
        }
        fp.seekg(0l, ios::end);
        position = fp.tellg();
        fp.close();
        N = position / (sizeof(girls));

        fp.open("miss.dat", ios::binary | ios::in);
        if (!fp)
        {
            cout << "Error";
            exit(1);
        }

        for (int i = 0; i < N; i++)
        {
            fp.read((char*)&miss, sizeof(girls));
            f[i] = miss;
        }

        for (int i = 0; i < N; i++)
        {
            if (strcmp(nomer, f[i].nomer) == 0 && strcmp(familiq, f[i].familiq) == 0)
            {
                flag = 1;
                cout << i + 1 << "." << "\n" << "Номер: " << f[i].nomer << "\n" << "Име: " << f[i].ime << "\n" <<
                    "Фамилия: " << f[i].familiq << "\n" <<
                    "Години: " << f[i].age << "\n" << "Височина: " << f[i].visochina << "\n" << "Тегло(В кг): " <<
                    f[i].teglo << "\n" << "Държава: " << f[i].durjava << "\n";
            }

        }

        if (flag == 0)
        {
            cout << "Няма участник с такива данни! " << endl;
        }

        cout << "Ново търсене? 1-Да/2-Не " << endl;
        cin >> S;


        fp.close();
        cout << endl;
    } while (S != 2);
}

void check20(girls f[])
{
    girls miss;
    int n;
    long position;
    fp.open("miss.dat", ios::binary | ios::in);
    if (!fp)
    {
        cout << "Error";
        exit(1);
    }
    fp.seekg(0l, ios::end);
    position = fp.tellg();
    fp.close();
    n = position / (sizeof(girls));

    fp.open("miss.dat", ios::binary | ios::in);
    if (!fp)
    {
        cout << "Error";
        exit(1);
    }

    for (int i = 0; i < n; i++)
    {
        fp.read((char*)&miss, sizeof(girls));
        f[i] = miss;
    }
    int above[50];

    for (int i = 0; i < n; i++)
    {
        if(f[i].age <20){
            f[i].age = above[i];
        }
    }
    for (int i = 1; i < n; i++) {
        if (above[i] < 20)
        {

            cout << i + 1 << "." << "\n" << "Номер: " << f[i].nomer << "\n" << "Име: " << f[i].ime << "\n" <<
                "Фамилия: " << f[i].familiq << "\n" <<
                "Години: " << f[i].age << "\n" << "Височина: " << f[i].visochina << "\n" << "Тегло(В кг): " <<
                f[i].teglo << "\n" << "Държава: " << f[i].durjava << "\n";

            }
        }

    fp.close();
    cout << endl;
}

void menu(int &c)
{
    cout << "++++++++++++++++МИС СВЯТ++++++++++++++++++:" << endl;
    cout << "\n";
    cout << "1.Въвеждане на данни за участничка" << endl;
    cout << "2.Списък на участничките" << endl;
    cout << "3.Търсене на участничка" << endl;
    cout << "4.Участнички над 20 години" << endl;
    cout << "0.Изход" << endl;
    cin >> c;
}
int main()
{
    setlocale(LC_ALL, "bulgarian");
    girls f[50];
    int choice = 0;
    menu(choice);
    while (choice)
    {
        switch (choice)
        {
        case 1:input(f);
            break;
        case 2:output(f);
            break;
        case 3:check(f);
            break;
        case 4:check20(f);
            break;
        default:
            break;
        }
        menu(choice);
    }
    return 0;
}