定义一个CPU类，包含等级（Rank）、频率（frequency）、电压(voltage)等属性，有两个公有成员函数run、stop。其中，rank为枚举类型CPU__Rank,定义为enum CPU_Rank{P1=1,P2,P3,P4,P5,P6,P7},frequency为单位是MHz的整型数，voltage为浮点型的电压值。观察构造函数和析构函数的调用顺序。

enum CPU_Rank {
    P1 = 1,
    P2,
    P3,
    P4,
    P5,
    P6,
    P7
};

class CPU {
   public:
    CPU(CPU_Rank rank, int frequency, float voltage);
    ~CPU();

    void run();
    void stop();

   private:
    CPU_Rank rank;
    int frequency;
    float voltage;
};

CPU::CPU(CPU_Rank rank, int frequency, float voltage)
    : rank(rank), frequency(frequency), voltage(voltage) {
    std::cout << "Constructor called" << std::endl;
}

CPU::~CPU() {
    std::cout << "Destructor called" << std::endl;
}

void CPU::run() {
    // Code to run the CPU
}

void CPU::stop() {
    // Code to stop the CPU
}

构造函数和析构函数的调用顺序是在创建对象时先调用构造函数，在销毁对象时调用析构函数。

相关问题

定义一个cpu类，包含等级（rank）、频率（frequency）、电压（voltage）等属性，有两个公有成员函数run(提示信息“cpu开始运行”)、stop(提示信息“cpu停止运行”)。其中，

class CPU:
def __init__(self, rank, frequency, voltage):
self.rank = rank
self.frequency = frequency
self.voltage = voltage

def run(self):
print("CPU开始运行")

def stop(self):
print("CPU停止运行")

定义并实现一个CPU类。包含等级(rank)、频率(frequency)、电压(voltage)等属性;包含无参构造函数、有参构造函数、复制构造函数、析构函数、公有成员函数run、stop以及和属性对应的公有成员函数set、get。其中ra

nk、frequency、voltage均为私有属性，可以使用set和get函数进行访问和修改。run函数表示CPU运行，stop函数表示CPU停止运行。以下是代码实现：

class CPU {
private:
    int rank;
    float frequency;
    float voltage;
public:
    CPU() : rank(0), frequency(0.0), voltage(0.0) {}
    CPU(int r, float f, float v) : rank(r), frequency(f), voltage(v) {}
    CPU(const CPU& cpu) : rank(cpu.rank), frequency(cpu.frequency), voltage(cpu.voltage) {}
    ~CPU() {}
    void run() {
        cout << "CPU is running." << endl;
    }
    void stop() {
        cout << "CPU has stopped." << endl;
    }
    void setRank(int r) {
        rank = r;
    }
    void setFrequency(float f) {
        frequency = f;
    }
    void setVoltage(float v) {
        voltage = v;
    }
    int getRank() const {
        return rank;
    }
    float getFrequency() const {
        return frequency;
    }
    float getVoltage() const {
        return voltage;
    }
};

可以使用以下代码进行测试：

int main() {
    CPU cpu(1, 2.5, 1.2);
    cout << "Rank: " << cpu.getRank() << endl;
    cout << "Frequency: " << cpu.getFrequency() << endl;
    cout << "Voltage: " << cpu.getVoltage() << endl;
    cpu.setRank(2);
    cpu.setFrequency(3.0);
    cpu.setVoltage(1.5);
    cout << "Rank: " << cpu.getRank() << endl;
    cout << "Frequency: " << cpu.getFrequency() << endl;
    cout << "Voltage: " << cpu.getVoltage() << endl;
    CPU cpu2 = cpu;
    cout << "Rank: " << cpu2.getRank() << endl;
    cout << "Frequency: " << cpu2.getFrequency() << endl;
    cout << "Voltage: " << cpu2.getVoltage() << endl;
    cpu.run();
    cpu.stop();
    return 0;
}