#include <iostream>
#include <random>

using std::cout; using std::endl;
using std::default_random_engine;

int main()
{
    default_random_engine e;
    for (size_t i = 0; i < 10; ++i) //生成十个随机数
       cout << e() << endl;
    cout << "Min random:" << e.min() << endl; //输出该随机数引擎序列的范围
    cout << "Max random:" << e.max() << endl;
    return 0;
}

#include <iostream>
#include <random>using std::cout; using std::endl;
using std::default_random_engine;int main()
{default_random_engine e; //或者直接在这里改变种子 e(10) e.seed(10); //设置新的种子for (size_t i = 0; i < 10; ++i)cout << e() << endl;cout << "Min random:" << e.min() << endl;cout << "Max random:" << e.max() << endl;return 0;
}

#include <iostream>
#include <random>using std::cout; using std::endl;
using std::default_random_engine;
using std::uniform_int_distribution;int main()
{default_random_engine e; uniform_int_distribution<unsigned> u(0, 9); //随机数分布对象 for (size_t i = 0; i < 10; ++i)  //生成范围为0-9的随机数序列 cout << u(e) << " ";cout << endl;return 0;
}

#include <iostream>
#include <random>using std::cout; using std::endl;
using std::default_random_engine;
using std::uniform_real_distribution;int main()
{default_random_engine e; uniform_real_distribution<double> u(0, 1); //随机数分布对象 for (size_t i = 0; i < 5; ++i)  //生成范围为0.0-1.0的随机数序列 cout << u(e) << " ";cout << endl;return 0;
}

#include <iostream>
#include <random>
#include <vector>
#include <string>using std::cout; using std::endl;
using std::default_random_engine;
using std::normal_distribution;
using std::vector; using std::string;int main()
{default_random_engine e; vector<unsigned> vals(9);normal_distribution<> n(4, 1.5); //正态分布，大部分生成的随机数落在0-8之间 for (size_t i = 0; i != 200; ++i)  {  unsigned v = lround(n(e)); //舍入到最近整数 if (v < vals.size())++vals[v];        //统计0-8数字出现的次数
    }for (decltype(vals.size()) i = 0; i != vals.size(); ++i) cout << i << ": " << string(vals[i], '#') << endl;return 0;
}