(C++) IntToStr

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

Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++11

Compiler(s):

G++ 4.9.2

Libraries used:

Qt: version 5.4.1 (32 bit)
STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppIntToStr/CppIntToStr.pro


#-------------------------------------------------

#

# Project created by QtCreator 2011-08-05T19:31:46

#

#-------------------------------------------------

QT       += core

QT       -= gui

QMAKE_CXXFLAGS += -std=c++0x

TARGET = CppIntToStr

CONFIG   += console

CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

./CppIntToStr/main.cpp


#include <string>



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

std::string IntToStrCpp0x(const int x)

{

  return std::to_string(x);

}



#include <sstream>

#include <stdexcept>

#include <string>



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

std::string IntToStrCpp98(const int x)

{

  std::ostringstream s;

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

  return s.str();

}



#include <string>

#include <boost/lexical_cast.hpp>



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

std::string IntToStrBoost(const int x)

{

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

}



#include <cassert>



int main()

{

  assert(IntToStrCpp0x(123) == "123");

  assert(IntToStrBoost(123) == "123");

  assert(IntToStrCpp98(123) == "123");



  assert(IntToStrCpp0x(-123) == "-123");

  assert(IntToStrBoost(-123) == "-123");

  assert(IntToStrCpp98(-123) == "-123");



  assert(IntToStrCpp0x(0) == "0");

  assert(IntToStrBoost(0) == "0");

  assert(IntToStrCpp98(0) == "0");

}

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