C#简单的枚举及结构

using System;namespace program{    enum WeekDays    {        a,//0        b,//1        c = 11,//11 赋值以后就变成11，不赋值就是2        d,//12        e,//13        f,//14        g//15    }//不能输入数字    struct student {        public string name;        public char sex;        public int age;    }    class program1    {        static void Main(string[] args)        {            WeekDays letter;            letter = WeekDays.e;            for (letter = 0; letter < WeekDays.g; letter++)            {                Console.WriteLine(letter);//看看枚举里的值到底是多少            }            student Bruce;//结构体的运用            Bruce.age = 18;            Bruce.name = "布鲁斯";            Bruce.sex = '男';            student Talyo;            Talyo.age = 19;            Talyo.name = "泰勒";            Talyo.sex = '女';            Console.WriteLine("姓名：{0}",Bruce.name);            Console.WriteLine("年龄：{0}",Bruce.age);            Console.WriteLine("性别：{0}",Bruce.sex);            Console.WriteLine("姓名：{0}",Talyo.name);            Console.WriteLine("年龄：{0}", Talyo.age);            Console.WriteLine("性别：{0}", Talyo.sex);        }    }}