How can I generate truly random numbers in C++ without getting repeated values frequently?

[vindhya.rddy]

The default rand() function is not truly random—instead, use the Mersenne Twister generator:

#include <iostream>
#include <random>

int main() {
    std::random_device rd;  
    std::mt19937 gen(rd());  
    std::uniform_int_distribution<int> dist(1, 6);  

    for (int i = 0; i < 6; ++i) {
        std::cout << dist(gen) << " ";
    }
    return 0;
}

Provides better randomness than rand().