使用boost库生成 随机数 随机字符串

#include <iostream>
#include <boost/random/random_device.hpp>
#include "boost/random.hpp"
#include "boost/generator_iterator.hpp"
using namespace std;

int randString() 
{
    /*<< We first define the characters that we're going
         to allow.  This is pretty much just the characters
         on a standard keyboard.
    >>*/
    std::string chars(
        "abcdefghijklmnopqrstuvwxyz"
        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
        "1234567890"
        "!@#$%^&*()"
        "`~-_=+[{]}\|;:'",<.>/? ");
    /*<< We use __random_device as a source of entropy, since we want
         passwords that are not predictable.
    >>*/
    boost::random::random_device rng;
    /*<< Finally we select 8 random characters from the
         string and print them to cout.
    >>*/
    boost::random::uniform_int_distribution<> index_dist(0, chars.size() - 1);
    for(int i = 0; i < 8; ++i) {
        std::cout << chars[index_dist(rng)];
    }
    std::cout << std::endl;
}
int main() 
{
    cout<<"===============rand String==============="<<endl;
    randString();


    cout<<"===============rand number==============="<<endl;
      typedef boost::mt19937 RNGType;
      RNGType rng;
      rng.seed(time(NULL));
      boost::uniform_int<> one_to_six( 99999, 999999 );
      boost::variate_generator< RNGType, boost::uniform_int<> >
                    dice(rng, one_to_six);
      for ( int i = 0; i < 6; i++ ) 
      {
          int n  = dice();
          cout << n << endl;
     }
}                     

 使用boost库生成随机字符串 随机数，生成随机数还是比较方便，随机字符串倒没觉得比rand方便多少，反而麻烦