高效利用C++编程技巧，构建可靠的嵌入式系统功能

class Motor {
private:
    int powerPin;
    int directionPin;
    
public:
    Motor(int powerPin, int directionPin) 
        : powerPin(powerPin), 
          directionPin(directionPin) 
    {
        // 初始化电机引脚
        pinMode(powerPin, OUTPUT);
        pinMode(directionPin, OUTPUT);
    }
    
    void setPower(bool on) {
        if (on) {
            digitalWrite(powerPin, HIGH);
        } else {
            digitalWrite(powerPin, LOW);
        }
    }
    
    void setDirection(bool forward) {
        if (forward) {
            digitalWrite(directionPin, HIGH);
        } else {
            digitalWrite(directionPin, LOW);
        }
    }
};

class Vector3d {
private:
    double x;
    double y;
    double z;
    
public:
    Vector3d(double x, double y, double z)
        : x(x), y(y), z(z) {}
    
    Vector3d operator+(const Vector3d& other) const {
        return Vector3d(x + other.x, y + other.y, z + other.z);
    }
    
    Vector3d operator-(const Vector3d& other) const {
        return Vector3d(x - other.x, y - other.y, z - other.z);
    }
    
    double dot(const Vector3d& other) const {
        return x * other.x + y * other.y + z * other.z;
    }
};

void processImage() {
    // 分配一块动态内存，存储图像数据
    unsigned char* imageData = new unsigned char[1024 * 768];
    
    // 处理图像数据
    // ...
    
    // 释放分配的内存
    delete[] imageData;
}

void processImage() {
    // 使用智能指针分配一块动态内存，存储图像数据
    std::unique_ptr<unsigned char[]> imageData(new unsigned char[1024 * 768]);
    
    // 处理图像数据
    // ...
    
    // 不需要手动释放内存，智能指针会在作用域结束后自动释放
}