Ex#Number#1

#include <iostream>
#include <string>
#include <memory>
#include <iomanip>
#include <ctime>
using namespace std;

struct StudentsList
{
    StudentsList(int count) : _count(count)
    {
        cout << "Create " << count << " students\n";
    }

    const size_t _count;

    string *studentFirstName = new string[_count];
    string *studentLastName  = new string[_count];
    double *result_of_exams  = new double[_count];
};


string generate_rand_name(int length)
{
    string _res;

    for (size_t charact = 0; charact < length; charact++)
    {
        _res += (char)(97 + static_cast <int> (rand()) / (static_cast <int> (RAND_MAX / (122 - 97))));
    }

    return _res;
}


bool create_new_table_of_students(StudentsList& stud)
{
    for (size_t i = 0; i < stud._count; i++)
    {
        stud.studentFirstName[i] = generate_rand_name(5);
        stud.studentLastName[i]  = generate_rand_name(5);
        stud.result_of_exams[i] =
            2.0f + static_cast <float> (rand()) / (static_cast <float> (RAND_MAX / (5.0f - 2.0f)));
    }

    return EXIT_SUCCESS;
}


void main()
{
    setlocale(LC_ALL, "rus");

    srand(static_cast <unsigned> (time(NULL)));

    std::unique_ptr <StudentsList> students(new StudentsList(10));

    create_new_table_of_students(*students);

    cout << "\nТаблица студентов:\n";
    for (size_t i = 0; i < 10; i++)
    {
        cout << setw(5) <<
            students->studentFirstName[i] << "  " <<
            students->studentLastName[i]  << "  " <<
            students->result_of_exams[i]  << endl;
    }

    cout << "\nПрошли в финал:\n";
    for (size_t i = 0; i < 10; i++)
    {
        if (students->result_of_exams[i] >= 3.0f)
        cout << setw(5) <<
            students->studentFirstName[i] << "  " <<
            students->studentLastName[i] << "  " <<
            students->result_of_exams[i] << endl;
    }

    system("pause");
}