Класс student

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

class student {
public:
    student()
        : surname(L""), name(L""), patronymic(L""), group(L""), point(0)
    { };
    student(wstring _surname, wstring _name, wstring _patronymic, wstring _group, double _point)
        : surname(_surname), name(_name), patronymic(_patronymic), group(_group), point(_point)
    { };
    student(const student &);
    ~student();
    void input();
    void output();
    student operator =(student &);
private:
    wstring surname;
    wstring name;
    wstring patronymic;
    wstring group;
    double point;
};

void ru();

int main() {
    ru();
    const size_t size = 2;
    student students[size];
    for (size_t n = 0; n < size; n++) students[n].input();
    for (size_t n = 0; n < size; n++) students[n].output();
    student ivanov = student(L"Иванов", L"Игорь", L"Филиппович", L"115а", 4.12);
    ivanov.output();
    cin.get(); cin.get();
    return 0;
}

student::~student() {
    group = patronymic = surname = name = L"";
    point = 0;
}
student::student(const student & _student) {
    this->surname = _student.surname;
    this->name = _student.name;
    this->patronymic = _student.patronymic;
    this->group = _student.group;
    this->point = _student.point;
}
student student::operator =(student & _student) {
    this->surname = _student.surname;
    this->name = _student.name;
    this->patronymic = _student.patronymic;
    this->group = _student.group;
    this->point = _student.point;
    return *this;
}
void student::input() {
    wcout << L"Введите фамилия:      "; getline(wcin, surname);
    wcout << L"Введите имя:          "; getline(wcin, name);
    wcout << L"Введите отчество:     "; getline(wcin, patronymic);
    wcout << L"Введите группу:       "; getline(wcin, group);
    do {
        wcout << L"Введите средний балл: "; cin >> point;
        if (cin.good() && point > 0) break;
        else {
            cin.clear();
            cin.ignore(80,'\n');
            wcout << L"\aВы ошиблись!\n";
        }
    } while (true);
    fflush(stdin);
    system("cls");
}
void student::output() {
    wchar_t v = ' ';
    streamsize accuracy = 2;
    wcout << v << surname
          << v << name
          << v << patronymic
          << v << group
          << v << fixed << setprecision(accuracy) << point << endl;
}
void ru() {
    wcout.imbue(locale("rus_rus.866"));
    wcin.imbue(locale("rus_rus.866"));
}