BV012DoWhileBasics

#include <iostream>

int main()
{
    int rangeMin{ 100000 };
    int rangeMax{ 999999 };
    int rubikon{ 100 };
    int num{ 0 };
    int digit{ 0 };
    int sum{ 0 };
    int inCorrect{ false };

    do
    {
        std::cout << "Enter some int number\n";
        std::cin >> num;

        inCorrect = num < rangeMin or num > rangeMax;
        if (inCorrect)
        {
            std::cout << "Number is out of range! Try again!\n";
        }

    } while (inCorrect);

    while (num)
    {
        digit = num % 10;
        sum += ((num > rubikon) ? digit : -digit);
        num /= 10;
    }
    std::cout << (sum ? "Lucky" : "Unlucky") <<" ticket\n";
}