iota and random shuffle

iota comes from "not an iota", meaning getting nothing out.
oppsitely, means init with some increasing sequence.
std::shuffle with mt19937 would get random segquence.
mt19937 is a typedef of complicated hex input param for Meresene-Tiwster pseudo random generator
std::random_device{}() is a random seed

#include "stdafx.h"
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <iterator>
#include <functional>
#include <numeric>
#include <random>

using namespace std;

int main()
{
 vector<double> v(10);
 iota(v.begin(), v.end(), -1.1);
 for (auto n : v)
  cout << n << endl;
 cout << endl;
 shuffle(v.begin(),v.end(), std::mt19937{ std::random_device{}() });
 for (auto n : v)
  cout << n << endl;
 std::string s;
 getline(cin, s);
    return 0;
}