#include <string>

#include <sstream>

/////////////////////////////////////

// the 'to_string' function

template< class type>

inline std::string to_string( const type & value)

{

    std::ostringstream streamOut;

    streamOut << value;

    return streamOut.str();

}

int main()

{

    std::string strDocName = "doc_test.txt";

    int nWordsCount;

    // ... calculate words count

    nWordsCount = 48;

    // {1}

    // using to_string

    std::string str1 = "We have " + to_string( nWordsCount) + " words";

    // {2} "Emulating" to_string

    std::stringstream streamOut;

    streamOut << "We have " << nWordsCount << " words";

    std::string str2 = streamOut.str();

    return 0;

}