Transform

#include <iostream>
#include <functional>
#include <vector>

template<typename Iter, typename Iter2, typename Function>
Iter transform(Iter begin, Iter end, Iter2 save, Function func)
{
    while (begin != end)
    {
        *save = func(*begin);
        ++begin;
        ++save;
    }
    return save;
}

int main()
{
    std::vector<int> vector1{-7, 5, 1, 2, 11};
    std::vector<int> vector2(5);
    auto result = transform(vector1.cbegin(), vector1.cend(), vector2.begin(), [](int element) {return element * element;});
    for (auto iterator = vector2.cbegin(); iterator < result;)
    {
        std::cout << *iterator++ << " ";
    }
    std::cout << std::endl;
}