Question

c++ 枚举类型如何使用？

#include "iostream"using namespace std;class CPU{public: CPU(int a,int b,double c); CPU(CPU &); int getfr(){return frequency;} int getwo(){return wordlength;} double getco(){return coefficient;} void run(){cout<<"run"<<endl;} void stop(){cout<<"stop"<<endl;}private: int frequency; enum cpu_len {8,16,32,64,128,256}wordlength; double coefficient;};CPU::CPU(int a,int b,double c){ frequency=a; wordlength=b; coefficient=c; cout<<"构造函数被调用"<<endl;}CPU::CPU(CPU &L):frequency(L.frequency),wordlength(L.wordlength),coefficient(L.coefficient){ cout<<"拷贝构造函数被调用"<<endl;}int main(){ CPU cpu1(4,1,4.0); CPU cpu2(cpu1); cout<<"cpu1"<<endl; cout<<"主频："<<cpu1.getfr()<<"MHz"<<"字长："<<cpu1.getwo()<<"倍频："<<cpu1.getco()<<endl; cout<<"cpu2"<<endl; cout<<"主频："<<cpu2.getfr()<<"MHz"<<"字长："<<cpu2.getwo()<<"倍频："<<cpu2.getco()<<endl;}

Answer 1

enum EnumType{ First, Second,...};
或者是enum EnumType{First = 30, Second = 50,...};

Answer 2

enum EnumType{ First, Second,...};
或者是enum EnumType{First = 30, Second = 50,...};
使用的时候跟宏一样使用。