What are some examples of finite state machines in C++?

Can you give me some examples of finite state machines implemented in C++?

Sure! A finite state machine (FSM) can be implemented in C++ using classes to represent states and transitions. For example, a simple turnstile FSM can have states like 'Locked' and 'Unlocked'.

How would you implement the turnstile FSM in code?

Here's a basic implementation:

class Turnstile {
public:
    enum State { LOCKED, UNLOCKED };
    State state;

    Turnstile() : state(LOCKED) {}

    void coin() {
        if (state == LOCKED) {
            state = UNLOCKED;
            std::cout << "Turnstile unlocked!";
        }
    }

    void push() {
        if (state == UNLOCKED) {
            state = LOCKED;
            std::cout << "Turnstile locked!";
        }
    }
};

This code defines a turnstile that can be locked and unlocked based on coin insertion and pushing.

What are some other examples of FSMs?

Other examples include traffic light control systems, vending machines, and game character state management. Each can be modeled as an FSM to handle different states and transitions.