inttostring2.cpp

#include <iostream>
#include <sstream>

template <class T> inline std::string to_string (const T& t)
{
    std::stringstream ss;
    ss << t;
    return ss.str();
}

int main()
{
    int i = 5;

    std::cout << i + i << std::endl;

    std::cout << to_string(i) + to_string(i) << std::endl;
}