#include <iostream>


struct fsmOne
{
	int state = 0;

	bool operator()() {
		std::cout << "S1." << state << std::endl;

		switch (state) {
			case 0:
				state = 1;
				break;
			case 1:
				state = 5;
				break;
			case 5:
				return( true );
		}

		return( false );
	}
};

struct fsmTwo
{
	int state = 0;
	fsmOne one;

	bool operator()() {
		std::cout << "S2." << state << std::endl;

		switch (state) {
			case 0:
				state = 1;
				one.state = 0;
				break;
			case 1:
				if (one()) {
					state = 5;
				}
				break;
			case 5:
				return( true );
		}

		return( false );
	}
};


int main(int argc, char const *argv[])
{
	fsmTwo two;

	while (!two()) {}

	return 0;
}