include iostream include stdio using namespace std struct student stri

#include <iostream>
#include <stdio.h>
using namespace std;


struct student
{
    string name;
    string number;
    string date;
};


class Group
{
private:
    student * B;
    int n;

public:

    Group()
    {
        n = 0;
        B = NULL;
    }

    Group(int _n)
    {
        n = _n;
        B = (student*) new student[n];

        for (int i=0; i<n; i++)
        {
            B[i].name = "";
            B[i].number = "";
            B[i].date = "00/00/00";
        }
    }

    ~Group()
    {
        if (n>0)
            delete[] B;
    }

    int GetN() { return n; }

    student& operator[](int index)
    {
        if ((index>=0)&&(index<n))
          return B[index];
        else
        {
            student BB;
            BB.name = "";
            BB.number = "";
            BB.date = "00/00/00";
            return BB;
        }
    }
};

int main()
{
    Group BB(3);
    BB[0].name = "Popov";
    BB[0].number = "M23";
    BB[0].date = "20/02/93";

    BB[1].name = "Popova";
    BB[1].number = "M28";
    BB[1].date = "27/02/93";

    BB[2].name = "Popovich";
    BB[2].number = "M21";
    BB[2].date = "20/02/95";

    string title;
    string num;
    string d;

    title = BB[1].name;
    num = BB[2].number; 
    d = BB[0].date; 

    cout << title << endl;
    cout << num<< endl;
    cout<<d<<endl;
}