PV913STLAdvExample

#include <iostream>
#include <vector>
#include <algorithm>


void prn(int val) { std::cout << val << ' '; };

int main()
{
    std::vector<int> arr{ 1,2,3,4,5,6,7,8,9,10 };
    std::vector<int> arrB{10,20,30,40,50};
    //std::vector<float> arrF{ 1.1,2.2,3.3,4.3,5.5,6.6,7.7,8.8,9.8,10.1 };
    std::copy_if(arr.begin(), arr.end(), std::ostream_iterator<int>(std::cout, " "),
                                            [](const auto& el) { return (el % 2 == 0); });
    std::cout << "\narrB pre copy\n";
    //std::for_each(arrB.begin(), arrB.end(), [](const auto& val) { std::cout << val << ' '; });
    std::copy(arrB.begin(), arrB.end(), std::ostream_iterator<int>(std::cout, " "));

    std::copy_if(arr.begin(), arr.end(), std::inserter(arrB, std::next(arrB.begin(), 3)),
                                                [](const auto& el) { return (el % 2); });

    std::cout << "\narrB post copy\n";
    //std::for_each(arrB.begin(), arrB.end(), [](const auto& val) { std::cout << val << ' '; });
    std::copy(arrB.begin(), arrB.end(), std::ostream_iterator<int>(std::cout, " "));

    return 0;

    //for (int i{ 0 }; i < arr.size(); ++i)
    //{
    //  std::cout << arr[i] << ' ';
    //}
    //std::cout << '\n';

    //for (int cnt{0}; const auto& el : arr)
    //{
    //  std::cout << cnt++ << " = " << el << '\n';
    //}

    //for (auto it{ std::next(arr.begin(),1) }; it != std::prev(arr.end(),2); ++it)
    //{
    //  std::cout << std::distance(arr.begin(), it) << ' ' << *it << '\n';
    //}
    //std::cout << '\n';

    int mul{ 2 };

    auto print = [](const auto& val) {std::cout << val << ' '; };
    std::for_each(std::next(arr.begin(), 2), std::prev(arr.end(), 2), [mul](auto& val) { val *= mul; std::cout << val << ' '; });
    //std::for_each(arr.begin(), arr.end(), print);
    std::cout << '\n';
    //std::for_each(arrF.begin(), arrF.end(), print);

    return 0;
}