how does a rand() works?

Question

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

int main() {
for (int x = 1; x <= 10; x++) {
cout << rand() << endl;
}
}
every time how it's output can be same?

Answer 1

you'll need to use a seed like this: #include <ctime>

srand(time(nullptr));
so the current time is the seed for the rng now