2015/4/9 数据转换 数组 枚举 /C#学习笔记
using System;
class StudentHomeWork
{
public enum Friends
{ 老大, 老二, 老三, 老四, 老五, 老六 };
public static void Main()
{
Friends f1 = Friends.老大;
Friends f2 = Friends.老二;
Friends f3 = Friends.老三;
Friends f4 = Friends.老四;
string[] family = new string[6];
family[0] = "大姨";
family[1] = "二姨";
family[2] = "三姨";
family[3] = "小姨";
Console.WriteLine("这是我的朋友圈:1.friends,2.classmate,3.family,4.coupling");
Console.Write("请选择:");
for (int j = 1; j <= 5; j++)
{
string s = Console.ReadLine();
int n = int.Parse(s);
switch (n)
{
case 1:
Console.WriteLine(f1.ToString() + "," + f2.ToString() + "," + f3.ToString() + "," + f4.ToString());
break;
case 2:
Console.WriteLine("马森, 曹真, 张梦婷, 杨明珠, 崔雄");
break;
case 3:
Console.WriteLine(family[0] + "," + family[1] + "," + family[2] + "," + family[3]);
break;
case 4:
Console.WriteLine("小明, 小小明");
break;
default:
Console.WriteLine("没有了");
break;
//int[] Array1 = new int[] { 1, 2, 3, 4 };
//for (int i = 0; i < Array1.Length; i++)
//{
// Console.WriteLine(i);
//}
}
}
}
}
枚举:
enum{元素1,元素2};
1.枚举是常量,不是变量,使用过程中不能再被赋值
2.枚举元素本身由系统定义了一个表示序号的数值。从0开始顺序定义为0,1,2...。
数组(一维):
定义一个数组:
int[]sz=new int[5];
int[]sz=new int[3]{1,2,3}
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