C#簡單的枚舉及結構

using System;
namespace program
{
    enum WeekDays
    {
        a,//0
        b,//1
        c = 11,//11 賦值以後就變成11，不賦值就是2
        d,//12
        e,//13
        f,//14
        g//15
    }//不能輸入數字


    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);//看看枚舉里的值到底是多少
            }

            student Bruce;//結構體的運用
            Bruce.age = 18;
            Bruce.name = "布魯斯";
            Bruce.sex = '男';
            student Talyo;
            Talyo.age = 19;
            Talyo.name = "泰勒";
            Talyo.sex = '女';
            Console.WriteLine("姓名：{0}",Bruce.name);
            Console.WriteLine("年齡：{0}",Bruce.age);
            Console.WriteLine("性別：{0}",Bruce.sex);
            Console.WriteLine("姓名：{0}",Talyo.name);
            Console.WriteLine("年齡：{0}", Talyo.age);
            Console.WriteLine("性別：{0}", Talyo.sex);
        }
    }
}