C++写一个简单的状态机实现

在C++中实现一个事件驱动的状态机，您可以在StateMachine类中添加事件枚举和处理事件的方法。以下是一个简单的事件驱动状态机示例：

#include <iostream>

// 定义状态枚举
enum class State {
    Idle,
    Running,
    Paused,
    Stopped
};

// 定义事件枚举
enum class Event {
    Start,
    Pause,
    Resume,
    Stop
};

class StateMachine {
private:
    State currentState;

public:
    StateMachine() : currentState(State::Idle) {}

    void handleEvent(Event event) {
        switch (event) {
            case Event::Start:
                start();
                break;
            case Event::Pause:
                pause();
                break;
            case Event::Resume:
                resume();
                break;
            case Event::Stop:
                stop();
                break;
        }
    }

private:
    void start() {
        if (currentState == State::Idle || currentState == State::Stopped) {
            currentState = State::Running;