randomize character

[Flaze07]

hi, is there any way so that a randomize number wont be the same ?
like, this code :

#include <iostream>
#include <random>
using namespace std;

int main()
{
    random_device lol;
    cout << lol();
}

will always yield this result when runned

3499211612

is there any way to make it so the number is different when runned each time ?

[JayhawkZombie]

Use something like std::uniform_int_distribution
http://en.cppreference.com/w/cpp/numeric/random/random_device/random_device

[Flaze07]

Thanks

[Albatross]

Annoyingly, random_device is not guaranteed to actually be a random device. In particular, MinGW's libstdc++ is known for not providing one.

Although I'm likely to annoy some cryptographers by suggesting this, if your random numbers don't need to be extremely high quality, you can use std::default_random_engine, whose constructor should be able to take a seed.

const unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
std::default_random_engine gen(seed);

-Albatross