bool isEvenLetter(char symbol)
{
                if (symbol % 2 == 0) //that means its even
                {
                    return true;
                }

    return false;
}

bool isEnd(char symbol)
{
    if (symbol == '!' || symbol == '.' || symbol == '?')
    {
        return true;
    }
    return false;
}

char ** replace(char ** arr , unsigned n, unsigned m)
{
    for (int i = 0; i < n; i++)
    {
        for (int k = 0; k < m; k++)
        {
            if (isEvenLetter(arr[i][k]) == true);
            {
                if (arr[i][k] > 122)
                {
                    arr[i][k] = 65;
                }
                if (arr[i][k] < 65)
                {
                    arr[i][k] = 66;
                }
                if (arr[i][k] >= 65 && arr[i][k] <= 90)
                {
                    for (int d = 65; d < 90; d++)
                    {
                        if (arr[i][k] % d == 0)
                        {
                            arr[i][k] = d;
                        }
                    }
                }
                if (arr[i][k] >= 97 && arr[i][k] <= 122)
                {
                    for (int d = 97; d < 122; d++)
                    {
                        if (arr[i][k] % d == 0)
                        {
                            arr[i][k] = d;
                        }
                    }
                }

            }
            if (isEnd(arr[i][k]) == true)
            {
                cout << "End of sentance.";
            }
        }
    }

    return nullptr;
}