#include <iostream>
#include <cmath>
#include <stdio.h>
#include <fstream>

using namespace std;
string dis[3] = { "Физика", "Математика", "Информатика" };

struct baza {
    int numb;
    string name;
    string gr;
    int esm[3];
};

void chtenie(baza data[10]) {
    string str;
    ifstream f("wedomost.txt");
    for (int i = 0; i < 10; i++) {
        f.read((char*)&data[i].numb, sizeof(data[i].numb));
        f.read((char*)&data[i].name, sizeof(data[i].name));
        f >> str;
        data[i].name = data[i].name + " " + str;
        cout << data[i].numb << " " << data[i].name << "\n";
        for (int j = 0; j < 3; j++) {
            f.read((char*)&data[i].esm[j], sizeof(data[i].esm[j]));
            cout << dis[j] << " = " << data[i].esm[j] << " ";
        }
        cout << "\n";
    }
}
void zapis(baza data[10]) {
    ofstream a("wedomost.dat", ios::binary);
    int k = 0, n = 0;
    cout << "\nДанные о студентах, имеющих хотя бы одну 2\n";
    for (int i = 0; i < 10; i++) {
        for (int j = 0; j < 3; j++) {
            if (data[i].esm[j] == 2)
                k++;
        }
        if (k > 0) {
            n++;
            cout << data[i].numb << " " << data[i].name << "\n";
            a.write((char*)&data[i].numb, sizeof(data[i].numb));
            a.write((char*)&data[i].name, sizeof(data[i].name));
            for (int j = 0; j < 3; j++) {
                a.write((char*)&data[i].esm[j], sizeof(data[i].esm[j]));
                cout << dis[j] << " = " << data[i].esm[j] << " ";
            }
        }
        k = 0;
        cout << "\n";
    }
    if (n == 0)
        cout << "\nТаких студентов нет\n";
}

int main() {
    setlocale(LC_ALL, "rus");
    baza data[10];
    cout << "База данных студентов\n";
    chtenie(data);
    zapis(data);
}