c++强类型枚举enum class NEWTYPE

c++11以前：

include

using namespace std;

class Cat

{

public:

Cat() :m_tp(Cat::AA){}

enum MYTYPE {AA,BB,CC};

static const int DD = 1;

private:

MYTYPE m_tp;

};

int main()

{

Cat cat;

int it = Cat::DD;  //可以使用类的静态成员;
int it2 = Cat::AA;  //也可以使用类里的枚举,有点分不清;
Cat::MYTYPE it3=Cat::AA;  //ok
cout << "hello world" << endl;
system("pause");
return 0;

}

“`

c++11之后：

class Cat

{

public:

Cat() :m_tp(Cat::NEWTYPE::DD){}

enum class NEWTYPE{DD,EE,FF}; //可以与static const int同名，一般枚举不行;

static const int DD = 1;

private:

NEWTYPE m_tp;

};

int main()

{

Cat cat;

int it = Cat::DD; //ok;

int it2 = Cat::AA; //fail;

Cat::NEWTYPE it3 = Cat::NEWTYPE::DD;//ok

cout << "hello world" << endl;
system("pause");
return 0;

}