Units of measurement in C++

Question

I\'m working on a game engine, and currently I\'m stuck designing the IO system. I\'ve made it so, the engine itself doesn\'t handle any file formats, but rathe

Answer 1

I know you mentioned you aren't using C++11 but others looking at this question may be, so here's the C++11 solution using user defined literals:

http://ideone.com/UzeafE

#include 
using namespace std;

class Frequency
{
public:
    void Print() const { cout << hertz << "Hz\n"; }

    explicit constexpr Frequency(unsigned int h) : hertz(h) {}
private:
    unsigned int hertz;
};
constexpr Frequency operator"" _Hz(unsigned long long hz)
{
    return Frequency{hz};
}
constexpr Frequency operator"" _kHz(long double khz)
{
    return Frequency{khz * 1000};
}

int main()
{
    Frequency(44100_Hz).Print();
    Frequency(44.1_kHz).Print();
    return 0;
}

Output:

44100Hz
44100Hz