Question

How to use mt19937 in C++

Answer 1

#include <iostream>
#include <random>

int main()
{
    std::mt19937 mt(time(nullptr));

    for (int i = 0; i < 10; i++)
        std::cout << mt() << '\n';
}




/*
run:

442545623
791260776
1254660388
2910229856
3672212806
771503738
904474238
1116529767
1458365050
4278033339

*/

 

70+ SQL courses for beginners and professionals

Answer 2

#include <iostream>
#include <random>

static std::random_device rd; 
static std::mt19937 seed{rd()}; 

int getRandom(int x, int y) {
    static std::uniform_int_distribution<int> uid(x, y); 
    
    return uid(seed); 
}

int main()
{
    for (int i = 0; i < 10; i++)
        std::cout << getRandom(1, 15) << " ";   
}




/*
run:

14 1 11 3 7 2 9 6 8 12 

*/

 

70+ SQL courses for beginners and professionals