C# 数据类型 值类型

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using System;

enum WeekDay   //声明枚举类型
{
    Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
};

class HelloWorld
{
    static void Main()
    {
        WeekDay day = WeekDay.Tuesday;
                   //声明枚举类型变量day,通过名称引用成员
        Console.WriteLine("Tuesday = {0}", day);
        int x = (int)WeekDay.Sunday;
                     //成员的值，为int型。从0开始。
        Console.WriteLine("Sunday = {0}", x);
    }
}

结构类型

结构一般由一个或多个数据类型相同或不相同的一组相关数据组成。如，

struct student
{
	public string name;//姓名
	public string sex;//性别
	public int age;//年龄
}
student stu1;//声明1个名为stu1的 student结构类型变量
stui1.name=“张三”;//为结构成员name赋值
stu1.sex=“男”;
stu1.age=21;