读head First C# Array

head first C# my ebook, page181

A special case: Arrays

数据定义：

bool[] myArray;
myArray=new bool[15];
myArray[4]=true;

 

    class MenuMaker
    {
        public Random Randomizer;
        string[] Meats = { "Roast beef", "Salami", "Turkey", "Ham", "Pastrami" };
        string[] Condiments = { "yellow mustard", "brown mustard", "honey mustard", 
                                  "mayo", "relish", "french dressing" };
        string[] Breads = { "rye", "white", "wheat", "pumpernickel", 
                              "italian bread","a roll" };

        public string GetMenuItem()
        {
            string randomMeat = Meats[Randomizer.Next(Meats.Length)];
            // Random.Next 方法 (Int32)  返回一个小于所指定最大值的非负随机数
            string randomCondiment = Condiments[Randomizer.Next(Condiments.Length)];
            string randomBread = Breads[Randomizer.Next(Breads.Length)];
            return randomMeat + " with " + randomCondiment + " on " + randomBread;
        }
    }

 

 

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            MenuMaker menu = new MenuMaker() { Randomizer = new Random() };

            label1.Text = menu.GetMenuItem();
            label2.Text = menu.GetMenuItem();
            label3.Text = menu.GetMenuItem();
            label4.Text = menu.GetMenuItem();
            label5.Text = menu.GetMenuItem();
            label6.Text = menu.GetMenuItem();

        }
    }