lala

#include "stdafx.h"
#include <math.h>
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
///////////////////////////////////////////////////////
class student
{
public:
	string fio;
	int id;
	string group;

	void getData()
	{
		cout << "Enter fio: "; cin >> fio;
		cout << "Enter id: "; cin >> id;
		cout << "Enter group: ";  cin >> group;
	}

	void showData()
	{
		cout << "Fio: " << fio;
		cout << "Id: " << id;
		cout << "Group: " << group;
	}
};

int main()
{
	student person;
	fstream file;
	int operation;
	do
	{
		cout << "Select one of the following operation:\n";
		cout << "1 = Add student\n";
		cout << "2 = Change student\n";
		cout << "3 = Delete student\n";
		cout << "4 = Search student\n";
		cout << "0 = Exit\n";
		cin >> operation;

		if (operation == 1)
		{
			file.open("lab_1.txt", ios_base::out | ios_base::app | ios_base::binary);
			cout << "Enter data:\n";
			person.getData();
			file.write(reinterpret_cast<char*>(&person), sizeof(person));
			file << "\r\n";
			file.close();
		}

		else if (operation == 2)
		{
			int search;
			cout << "Enter id of the student for search and change: "; cin >> search;
			file.open("lab_1.txt", ios_base::out | ios_base::in | ios_base::binary);
			file.seekg(0);
			while (!file.eof())
			{
				file.read(reinterpret_cast(&person), sizeof(person));
				cout « "FOUND" « person.id;
				/* file.read(reinterpret_cast<char*>(&person), sizeof(person));
				if (search == person.id)
				{
					cout << "Enter new data:\n";
					person.getData();
					file.write(reinterpret_cast<char*>(&person), sizeof(person));
				}
				*/
			}
			file.close();
		}
/*
		else if (operation == 3)
		{
			int search;
			cout << "Enter id of the student for search and delete: "; cin >> search;
			file.open("lab_1.txt", ios_base::in | ios_base::binary);
			file.seekg(0);
			while (!file.eof())
			{
				cout << file.tellg() << "   |   ";
				file.read(reinterpret_cast<char*>(&person), sizeof(person));
				if (search == person.id)
				{
				}
				cout << file.tellg() << "   |   ";
				file.close();
			}
		}
		else if (operation == 4)
		{
			int id_student;
			cout << "Введите номер зачетки студента, по которому будет осуществляться поиск и вывод информации: "; cin >> id_student;
			file.open("1.txt", ios_base::out | ios_base::binary);
			file.seekg(0);
			file.read(reinterpret_cast<char*>(&pers), sizeof(pers));
			while (!file.eof())
			{
			if (id_student == pers.id_zachet)
			{
			}
			file.read(reinterpret_cast<char*>(&pers), sizeof(pers));
			}
			file.close();
		}
*/
	} while (operation != 0);
	system("pause");
	return 0;
}