(C++) IntToStr

IntToStr is a code snippet to convert an int to std::string. To convert a std::string to int, use StrToInt.

IntToStr has multiple versions:

IntToStr using the C++98 and the STL
IntToStr using the C++98 and the Boost library
IntToStr using the C++11 and the STL

Download the Qt Creator project 'CppIntToStr' (zip)

IntToStr using the C++98 and the STL


#include <stdexcept>

#include <sstream>



//From http://www.richelbilderbeek.nl/CppIntToStr.htm

const std::string IntToStr(const int x)

{

  std::ostringstream s;

  if (!(s << x)) throw std::logic_error("IntToStr failed");

  return s.str();

}

The code snippet above was modified from the C++ FAQ Lite.

IntToStr using the C++98 and the Boost library


#include <string>

#include <boost/lexical_cast.hpp>



//From http://www.richelbilderbeek.nl/CppIntToStr.htm

const std::string IntToStr(const int x)

{

  return boost::lexical_cast<std::string>(x);

}

IntToStr using the C++11 and the STL


#include <string>



//From http://www.richelbilderbeek.nl/CppIntToStr.htm

const std::string IntToStr(const int x)

{

  return std::to_string(x);

}

External links

C++ FAQ lite page about int to std::string conversion

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.