maybe.cpp

#include <random>
class Maybe {
	std::mt19937 rng;
	std::bernoulli_distribution coin;
	public:
	operator bool() { return coin(rng); }
} maybe;

#include <iostream>
using std::cout;
using std::endl;

int main(int argc, char *argv[])
{
	for (int i = 0; i < 10; ++i) {
		bool a = maybe;
		cout << a << endl;
	}
	return 0;
}