C / C++ / MFC

#pragma once
 
#define USE_STRSTREAM
 
#ifdef USE_STRSTREAM
#include <strstream>
#else
#include <sstream>
#endif
 
class pja_format
{
...
public:
    // convert any type to a string using the inserter << operator
    template <class T> static const char * tostring (const T &t)
    {
#ifdef USE_STRSTREAM
        std::strstream s;
#else
        std::ostringstream s;
#endif
        s.setf(std::ios::fixed);
        s.precision(precision);
        s << t << std::ends;
#ifdef USE_STRSTREAM
        return s.str();
#else
        return s.str().c_str();
#endif
    }

    // explicit override of the tostring function for the bool type
    template<> static const char * tostring (bool b)
    {
        return b ? "true" : "false";
    }
};