1、 枚举值

//ConsoleApplication1.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include <iostream>

using std::cout;

using std::endl;

using std::cin;

int main()

{

    char temp;

    enum Myenum { one = 1,two= '2',three ='3', four='4'};

    enum Myenum z1 = one;

    enum Myenum z2 = two;

    enum Myenum z3 = three;

    enum Myenum z4 = four;

    cout << z1<< endl;

    cout << static_cast<char>(z2) << endl;

    cout << static_cast<char>(z3) << endl;

    cout << z4<< endl;

    cin >> temp;

    return 0;

}      

枚举值的默认类型是整数型，最后输出的52是‘4’的ascii码

1

2

3

52

可以改变枚举值的默认类型。

比如改为char

//ConsoleApplication1.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include <iostream>

using std::cout;

using std::endl;

using std::cin;

int main()

{

    char temp;

    enum class Myenum:char { one='1' ,two,three, four};

    Myenum z1 = Myenum::one;

    Myenum z2 = Myenum::two;

    Myenum z3 = Myenum::three;

    Myenum z4 = Myenum::four;

    cout << static_cast<char>(z1)<< endl;

    cout << static_cast<char>(z2)<< endl;

    cout << static_cast<char>(z3)<< endl;

    cout << static_cast<char>(z4)<< endl;

    cin >> temp;

    return 0;

}