Converting data types to adn from strings in C++

convBoost.cpp

#include <boost/lexical_cast.hpp>

inline std::string IntToString(unsigned int _uiIntToConvert) {

        MODT_LOG_DEBUG(octopus::getRootLogger(), "EODUtils::IntToString", "Int to convert: [" << _uiIntToConvert << "]");
        std::string sRet;
        try {
            sRet = boost::lexical_cast< std::string >(_uiIntToConvert);
        } catch (boost::bad_lexical_cast&) {
            sRet = "";
        }
        MODT_LOG_DEBUG(octopus::getRootLogger(), "EODUtils::IntToString", "Converted value: [" << sRet << "]");
        return sRet;

    }

    inline int StringToInt(std::string _sInt) {

        MODT_LOG_DEBUG(octopus::getRootLogger(), "EODUtils::StringToInt", "String to convert: [" << _sInt << "]");
        int iInt = -1;
        try {
            iInt = boost::lexical_cast< int >(_sInt);
        } catch (boost::bad_lexical_cast&) {
            iInt = -1;
        }
        MODT_LOG_DEBUG(octopus::getRootLogger(), "EODUtils::StringToInt", "Converted int: [" << iInt << "]");
        return iInt;

    }

    inline double StringToDouble(std::string _sDouble) {

        MODT_LOG_DEBUG(octopus::getRootLogger(), "EODUtils::StringToDouble", "String to convert: [" << _sDouble << "]");
        double dDouble = -1;
        try {
            dDouble = boost::lexical_cast< double >(_sDouble);
        } catch (boost::bad_lexical_cast&) {
            dDouble = -1;
        }
        MODT_LOG_DEBUG(octopus::getRootLogger(), "EODUtils::StringToDouble", "Converted double: [" << dDouble << "]");
        return dDouble;

    }
    

convPrintf.cpp

#include <iostream>

using namespace std;

int main()
{
    int Number = 123; // number to convert
    char Result[16]; // string which will contain the number

    sprintf ( Result, "%d", Number ); // %d makes the result be a decimal integer
    std::cout << Result << std::endl;
    
    char Text[] = "456"; // string to be converted
    int ResultNum; // number which will contain the result

    sscanf ( Text, "%d", &ResultNum );
    std::cout << ResultNum << std::endl;
  
    return 0;
  
}

convStreams.cpp

// Example program
#include <iostream>
#include <string>
#include <sstream>

using namespace std;

int main()
{
  int Number = 123;       // number to be converted to a string
  string Result;          // string which will contain the result
  ostringstream convert;   // stream used for the conversion
  convert << Number;      // insert the textual representation of 'Number' in the characters in the stream
  Result = convert.str(); // set 'Result' to the contents of the stream
  std::cout << "Int converted to String: " << Result << std::endl;
  
  string Text = "456";
  if ( ! (istringstream(Text) >> Number) ) Number = 0;
  std::cout << "String converted to Int: " << Number << std::endl; 	
  
  return 0;
  
}

cpp11.cpp

atoi( str.c_str() );
std::stoi( str );