loto.cpp

// ConsoleApplication2.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <vector>
#include <random>

using std::vector;
using std::cout;
using std::random_device;
using std::mt19937;
using std::uniform_int_distribution;
using std::endl;

int main()
{

    // объявляем костанты и переменные
    const int number_of_barrels = 90;
    const int number_of_random_numbers_to_generate = 5;

    const int range_from = 0;
    const int range_to = number_of_barrels;

    random_device rand_dev;
    mt19937 generator(rand_dev());

    vector<int> barrels;

    cout << "Filling vector." << endl;
    for(int i = 0; i < number_of_barrels; i++) {
        barrels.push_back(i+1);
    }


    cout << "Getting 5 random numbers from the vector and showing it on the screen:" << endl;
    for(int i = 0; i < number_of_random_numbers_to_generate; i++) {
        uniform_int_distribution<int> distr(range_from, range_to - i);
        int randomNumber = distr(generator); // генерируем рандомное число
        int numberAt = barrels.at(randomNumber); // читаем число из вектора и иницализируем переменную numberAt этим числом
        barrels.erase(std::cbegin(barrels) + randomNumber); // удаляем это число из вектора
        cout << numberAt << " "; // выводим это число на экран.
    }

}

// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

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