tostring.cpp

#include <sstream>
#include <iostream>
#include <string>

template<typename T>
std::string to_string(const T& x) {
  std::stringstream i;
  i << x;
  return i.str();
}

int main(int argc, char const *argv[])
{
  std::cout << to_string(5) << "\n";
  /* code */
  return 0;
}