#include "pch.h"
#include <iostream>
using namespace std;

template <typename T>
class SimpleVector
{
public:
    /*          Пока не имеет смысла.
    SimpleVector()
    {
        data = nullptr;
        last = data;
        end_ = data + 1;
    }
    */
    SimpleVector(size_t size)
    {
        data = new T[size];
        last = data;
        end_ = data + size;
    }

    ~SimpleVector()
    {
        delete[] data;
    }

    const T& operator[] (size_t index)
    {
        return data[index];
    }

    T* begin() { return data; }
    T* end() { return end_; }

    const T* begin() const { return data; }
    const T* end() const { return end_; }

    size_t Capacity() const
    {
        return end_ - data;
    }

    size_t Size() const
    {
        return last - data;
    }

    void PushBack(const T& value)
    {
        *last = value;
        last++;
    };


private:
    T* data;
    T* last;
    T* end_;
};


int main()
{
    SimpleVector<int> vec(10);
    for (int i = 0; i < 10; i++)
    {
        vec.PushBack(i * 5);
    }
    for (const auto& i : vec)
    {
        cout << i << " ";
    }
}