C++随机数

真随机

#include <random>
#include <string>

uint32_t num = std::random_device{}();

伪随机

#include <random>
#include <string>
// 获取32位随机值
static std::mt19937 rand_gen_32(std::random_device{}());
uint32_t num = rand_gen_32();

// 获取64位随机值
static std::mt19937_64 rand_gen_64(std::random_device{}());
uint64_t num = rand_gen_64();