cppDebugTask

#include <iostream>

int main()
{
    int num{ 124567 };
    int newNum{ 0};
    int mul{ 1 };
    bool operation{true};

    while (num)
    {
        int digit{ (num % 10) * mul };

        newNum += (operation  ? digit * 10 :  digit / 10);
        num /= 10;
        mul *= 10;

        operation = !operation;
    }

    std::cout << newNum << '\n';
}