cppSumAvgZeroesCntMenu

#include <iostream>

int main()
{
    int num{ 0 };
    int digit{ 0 };
    int digits{ 0 };
    int sum{ 0 };
    int zeroes{ 0 };
    float avg{ 0 };
    int menu{ 0 };

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

        for (digits = 0, sum = 0, zeroes = 0; num; num /= 10)
        {
            ++digits;
            digit = num % 10;
            sum += digit;
            if (!digit)
            {
                ++zeroes;
            }
        }
        avg = (float)sum / digits;
        do
        {
            std::cout << "Choose an option:\n" <<
                "1 - digits count\n2 - digits sum\n3 - digits avg\n4 - zeroes count\n5 - all info at once\n0 - exit\n";
            std::cin >> menu;

            if (menu == 1 or menu == 5) { std::cout << "digits count: " << digits << '\n'; }
            if (menu == 2 or menu == 5) { std::cout << "digits sum: " << sum << '\n'; }
            if (menu == 3 or menu == 5) { std::cout << "digits avg: " << avg << '\n'; }
            if (menu == 4 or menu == 5) { std::cout << "zeroes count: " << zeroes << '\n'; }
        } while (menu);

        std::cout << "Choose an option:\n" <<
            "1 - enter new number\n0 - exit\n";
        std::cin >> menu;
    } while (menu);

    return 0;
}