Templated version of a `ToBinaryString` function

ToBinaryString.cpp

#include <iostream>
#include <string>

template <int N>
struct ToBinaryString
{
    inline static std::string result()
    {
        return ToBinaryString<N / 2>::result() + ((N & 1) == 0 ? "0" : "1");
    }
};

template <>
struct ToBinaryString<0>
{
    inline static std::string result()
    {
        return "0";
    }
};

template <>
struct ToBinaryString<1>
{
    inline static std::string result()
    {
        return "1";
    }
};

int main()
{
    std::cout << ToBinaryString<85>::result() << std::endl;
}