Hex Conversion? (HELP PLEASE!)

Hello there
Since this is C++ forum, how about doing it the C++ way?
something similar to

Code:

---

#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
#include <algorithm>
#include <iterator>

struct DOHString
{
    typedef std::ios_base::fmtflags FlagType;

    explicit DOHString(){}

    void convert(const std::string& str, std::ostream& os,
        FlagType flagValue = std::ios_base::hex | std::ios_base::showbase)
    {
        // set the iostate format values
        os.flags(flagValue);

        // convert each char by the called function
        // don't forget to use the delimiter to your needs!
        std::transform(str.begin(), str.end(),
            std::ostream_iterator<int>(os, " "),
            basicShift);
    }
private:
    static int basicShift(char c)
    {
        // do the work here
        // explicit cast
        return static_cast<int>(c);
    }
};

int main()
{
    // test runs
    // to file, in Hex
    std::ofstream outFile("out.txt", std::ios_base::binary);
    DOHString c;
    c.convert("wow how pow bow", outFile);

    // to console, in Oct
    c.convert("cow", std::cout, std::ios_base::oct | std::ios_base::showbase);
}

---