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

See it does produce random values but they are same at each execution
If u want different values at each execution use srand();

Answer 2

https://code.sololearn.com/c3ZAtMuMOJ2J/?ref=app