cppFilterEven

#include <iostream>

template <typename T>
void printArr(T* begin, T* end)
{
    while (begin != end)
    {
        std::cout << *begin++ << ' ';
    }
    std::cout << '\n';
}


int main()
{
    const int arrSize{ 10 };
    int* arrSrc{ new int[10]{1,4,2,3,6,8,1,0,6,8} };
    //int* arrSrc{ new int[10]{1,3,5,7,9,1,1,1,1,1} };
    //int* arrSrc{ new int[10]{} };

    //4,2,6,8,0,6,8,0,6,8
    int resSize{ 0 };

    auto begin{ arrSrc };
    auto end{ arrSrc + arrSize };

    auto insertPos{ arrSrc };

    printArr(arrSrc, arrSrc + arrSize);

    for (; (insertPos != end) and (*insertPos % 2 == 0); ++insertPos,++resSize);

    if (insertPos != end)
    {
        resSize = 0;
        begin = insertPos + 1;
        while ( begin != end)
        {
            if (*begin % 2 == 0)
            {
                *insertPos++ = *begin;
                ++resSize;
            }
            ++begin;
        }
    }

    printArr(arrSrc, arrSrc + arrSize);
    printArr(arrSrc, arrSrc + resSize);



    //printArr(arrSrc, arrSrc + arrSize);

    //for (int i{ 0 }; i < arrSize; ++i)
    //{
    //  if (arrSrc[i] % 2 == 0)
    //  {
    //      ++resSize;
    //  }
    //}

    //int* arrDest{ new int[resSize] {} };
    //auto copyPos{ arrDest };

    //for (int i{ 0 }; i < arrSize; ++i)
    //{
    //  if (arrSrc[i] % 2 == 0)
    //  {
    //      *copyPos++ = arrSrc[i];
    //      //++copyPos;
    //      //arrDestCopy[i] = arrSrc[i];
    //  }
    //}

    //printArr(arrDest, arrDest + resSize);

    delete[] arrSrc;
    //delete[] arrDest;
    return 0;
}