Generate random number in range (C++)

random_in_range.cc

#include <random>

int main(int argc, char *argv[]) {

#ifdef APPROACH1            // C++11

    std::random_device rd;  // used once to initialise (seed) engine
    // random-number engine (Mersenne-Twister in this case)
    std::mt19937 rng(rd());
    std::uniform_int_distribution<int> uni(min, max);  // guaranteed unbiased

    auto random_integer = uni(rng);

#endif

#ifdef APPROACH2

    int min = 0, max = 128;
    int random_value = min + (rand() % (int)(max - min + 1))

#endif

    return 0;
}