arrRandEven

#include <iostream>

int main()
{
    const int arrSize{ 10 };
    int arr[arrSize]{};

    for (int i{ 0 }; i < arrSize; ++i)
    {
        arr[i] = rand() % 11;
        if (arr[i] % 2 == 0)
        {
            std::cout << arr[i] << '\t' << i << '\n';
        }
    }

    std::cout << '\n';

    for (int i{ 0 }; i < arrSize; ++i)
    {
        std::cout << arr[i] << ' ';
    }

    std::cout << '\n';

}