C/code/CPU类的定义和使用——9-02.cpp

#include <iostream>
#include <string>

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

class CPU {
private:
    CPU_Rank rank;
    int frequency;
    float voltage;

public:
    CPU(CPU_Rank r = P1, int f = 100, float v = 2.0) : rank(r), frequency(f), voltage(v) {
        std::cout << "one CPU is created!" << std::endl;
    }

    ~CPU() {
        std::cout << "one CPU is distoried!" << std::endl;
    }

    void display() {
        std::string rank_str;
        switch (rank) {
            case P1: rank_str = "P1"; break;
            case P2: rank_str = "P2"; break;
            case P3: rank_str = "P3"; break;
            case P4: rank_str = "P4"; break;
            case P5: rank_str = "P5"; break;
            case P6: rank_str = "P6"; break;
            case P7: rank_str = "P7"; break;
            default: rank_str = "Unknown Rank";
        }

        std::cout << "rank: " << rank_str << std::endl;
        std::cout << "frequency: " << frequency << std::endl;
        std::cout << "voltage: " << voltage << std::endl;
    }

    void run() {
        std::cout << "CPU is running!" << std::endl;
    }

    void stop() {
        std::cout << "CPU stop!" << std::endl;
    }
};

int main() {
    int rank_input, frequency_input;
    float voltage_input;
    std::cin >> rank_input >> frequency_input >> voltage_input;

    CPU myCPU(static_cast<CPU_Rank>(rank_input), frequency_input, voltage_input);

    myCPU.run();
    myCPU.display();
    myCPU.stop();

    return 0;
}