boost 代码片断

#include <iostream>
#include <iomanip>
#include <string>
#include <boost/version.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/format.hpp>

using boost::format;
using boost::io::group;

int main(int argc, char * argv[])
{
    
    // Boost Version Check

    
    std::cout << "-------------------------------------------------" << '\n';
    
    std::cout << "\t" << "Checking Boost's Version... \n";
    std::cout << "\t" << "Version: " << BOOST_VERSION << '\n';
    
    std::cout << "-------------------------------------------------" << '\n';
    
    
    // data type convertion

    using boost::lexical_cast;
    
    std::string str = "123";
    int a = lexical_cast<int>(str);
    double b = lexical_cast<double>(str);
    
    std::setprecision(10);
    std::setfill('*');
    std::cout << "\t" << "string: " << "\t" << str << '\n';
    std::cout << "\t" << "int: " << "\t\t" << a + 1 << '\n';
    std::cout << "\t" << "double: " << "\t" << b + 1.1 << '\n';
    
    std::cout << format("%1% %2% %3% %2% %1% \n") % "11" % "22" % "333"; // 'simple' style.


    system("sleep 2");
    return 0;
}