demonstrate the usage of c++ standard library random facilities

get_random_string.cpp

#include <iostream>
#include <random>
#include <string>

std::string get_random_string(size_t n)
{
	std::random_device device;
	std::default_random_engine::result_type seed = device();
	std::default_random_engine engine(seed);
	std::uniform_int_distribution<int> distribution('a', 'z');
	std::string result(n, '\0');
	for (size_t i = 0; i < n; ++i)
		result[i] = static_cast<char>(distribution(engine));
	return result;
}

int main()
{
	std::cout << get_random_string(10) << "\n";
	return 0;
}