C++ Reverse number without Class and functions

//VS 2019 Pro
//Updated: 2021-01-19 01:41

#include <iostream>

typedef unsigned long DWORD;

template <class T>
T ReverseNumber(T number)
{
    T numR;
    T cont;
    T var;

    numR = 0;
    cont = 1;
    var = number;

    //while (var > 10) //bug
    while (var > 9) //fix
    {
        var /= 10;
        cont *= 10;
    }

    var = number;

    //while (var > 10) //bug
    while (var > 0) //fix
    {
        numR += ((var % 10) * cont);

        var /= 10;
        cont /= 10;
    }

    //numR += var; //bug - removed

    return numR;
}

int main()
{
    std::cout << ReverseNumber(123456789) << std::endl;

    std::cin.get();

    return 0;
}