C# 如何从外部方法调用数组列表项
本文关键字：数组 列表 调用 方法 从外部 | 更新日期: 2023-09-27 18:36:04
我对尝试编程很陌生，我什至不确定如何正确提出我的问题。我有一个错误，阻止我在用户离开程序时向用户显示随机卡号。（请参阅第 21 行：Console.WriteLine("'n" + "Your lucky card For today is: " + yourCard[luckyFiftyTwo]));数组、随机发生器等都包含在"获取财富"方法中。
我可以将方法切成薄片，并在第二个随机发生器中放入两个随机发生器，但这会让我重复一行代码来做到这一点，在我看来，我应该能够调用实例（我不知道我是否说得对，请随时纠正我，我真的很想学习 - 谢谢）当有人退出程序时。所以我需要能够将"yourCard[luckyFiftyTwo]"的结果从getFortune方法中传递出来，并在magic8ball方法中进入/使其可访问。
任何帮助，不胜感激。我希望我已经解释了我想做什么。再一次，我真的很愚蠢，试图做超出我老师要求范围的事情 - 我认为这是一个很好的学习方式（我们甚至还没有使用数组 - 我可以使用 breakCase 语句来完成这一切，但我认为数组会更清晰/更紧密）。
我现在在喋喋不休。请帮忙。
代码如下：
using System;
namespace a040___Methods_Array___Crazy8ball
{
class Program
{
//test in chunks
public void Magic8ball()
{
Console.WriteLine(" - - - - - - - - = = = = Wisdom of Magic 8 Ball = = = = - - - - - - - - 'n 'n ");
Console.WriteLine("Would you like to consult the wisdom of the Magic 8 Ball? 'n");
PlayAgain();//we do here to ask if they want to play (Y)(N)(?)
do
{
GetFortune();
} while (PlayAgain()); //while they keep wanting to play
Console.WriteLine("Thank you for consulting the wisdom of the Magic 8 Ball.");
Console.WriteLine("'n" + "Your lucky card For today is: " + yourCard[luckyFiftyTwo]);
}
public Boolean PlayAgain()
{
Console.WriteLine("'n" + "Please enter '"Y'" to play, or '"N'" If you would prefer not to continue to play.");
String command = Console.ReadLine().ToLower(); //Read in data
if (command == "y") return true;
if (command == "n") return false;
Console.WriteLine("'n" + "What was that? I'm sorry but the Magic 8 Ball didn't understand your entry.");
return false;
}
public void GetFortune()//produces random results
{
Random rnd = new Random();
int luckyEight = rnd.Next(19); // create random number (0 - 20)
int luckySix = rnd.Next(5); // create random number (0 - 5)
//int luckyFiftyTwo = rnd.Next(1, 52); // create random number (0 - 52)
int luckyFiftyTwo = rnd.Next(53); // create random number (1 - 53)
//type of array - name of array - declaration of array - array size
String[] responses = new String[20];//array is a square bracket
responses[0] = "It is certain.";
responses[1] = "It is decidedly so.";
responses[2] = "Yes definitely.";
responses[3] = "You may rely on it.";
responses[4] = "As I see it yes.";
responses[5] = "Most likely.";
responses[6] = "Outlook good.";
responses[7] = "Yes";
responses[8] = "Signs point to yes.";
responses[9] = "Reply hazy try again.";
responses[10] = "Ask again later.";
responses[11] = "Better not tell you now.";
responses[12] = "Cannot predict now.";
responses[13] = "Concentrate and ask again.";
responses[14] = "Don't count on it.";
responses[15] = "My reply is no.";
responses[16] = "My sources say no.";
responses[17] = "Outlook not so good.";
responses[18] = "Very doubtful.";
responses[19] = "No.";
//type of array - name of array - declaration of array - array size
String[] confusiusSays = new String[6];//array is a square bracket
confusiusSays[0] = "Confucius Say: Help, I'm prisoner in a Chinese bakery!!!'n";
confusiusSays[1] = "A relationship is the opportunity to do something you hate with someone you love.'n";
confusiusSays[2] = "It's ok to let a fool kiss you, but don't let a kiss fool you.'n";
confusiusSays[3] = "Never argue with a fool...he may be doing the same thing.'n";
confusiusSays[4] = "An Optimist is a girl who regards a bulge as a curve.'n";
confusiusSays[5] = "A Shotgun wedding is a case of wife or death.'n";
//type of array - name of array - declaration of array - array size
String[] yourCard = new String[54];//array is a square bracket
//joker
yourCard[0] = "The Joker";
//clubs
yourCard[1] = "The One of Clubs";
yourCard[2] = "The Two of Clubs";
yourCard[3] = "The Three of Clubs";
yourCard[4] = "The Four of Clubs";
yourCard[5] = "The Five of Clubs";
yourCard[6] = "The Six of Clubs";
yourCard[7] = "The Seven of Clubs";
yourCard[8] = "The Eight of Clubs";
yourCard[9] = "The Nine of Clubs";
yourCard[10] = "The Ten of Clubs";
yourCard[11] = "The Jack of Clubs";
yourCard[12] = "The Queen of Clubs";
yourCard[13] = "The King of Clubs";
//diamonds
yourCard[14] = "The One of Diamonds";
yourCard[15] = "The Two of Diamonds";
yourCard[16] = "The Three of Diamonds";
yourCard[17] = "The Four of Diamonds";
yourCard[18] = "The Five of Diamonds";
yourCard[19] = "The Six of Diamonds";
yourCard[20] = "The Seven of Diamonds";
yourCard[21] = "The Eight of Diamonds";
yourCard[22] = "The Nine of Diamonds";
yourCard[23] = "The Ten of Diamonds";
yourCard[24] = "The Jack of Diamonds";
yourCard[25] = "The Queen of Diamonds";
yourCard[26] = "The King of Diamonds";
//hearts
yourCard[27] = "The One of Hearts";
yourCard[28] = "The Two of Hearts";
yourCard[29] = "The Three of Hearts";
yourCard[30] = "The Four of Hearts";
yourCard[31] = "The Five of Hearts";
yourCard[32] = "The Six of Hearts";
yourCard[33] = "The Seven of Hearts";
yourCard[34] = "The Eight of Hearts";
yourCard[35] = "The Nine of Hearts";
yourCard[36] = "The Ten of Hearts";
yourCard[37] = "The Jack of Hearts";
yourCard[38] = "The Queen of Hearts";
yourCard[39] = "The King of Hearts";
//spade
yourCard[40] = "The One of Spades";
yourCard[41] = "The Two of Spades";
yourCard[42] = "The Three of Spades";
yourCard[43] = "The Four of Spades";
yourCard[44] = "The Five of Spades";
yourCard[45] = "The Six of Spades";
yourCard[46] = "The Seven of Spades";
yourCard[47] = "The Eight of Spades";
yourCard[48] = "The Nine of Spades";
yourCard[49] = "The Ten of Spades";
yourCard[50] = "The Jack of Spades";
yourCard[51] = "The Queen of Spades";
yourCard[52] = "The King of Spades";
//second joker
yourCard[53] = "The Second Joker";
Console.WriteLine("'n" + "Ask a question and the Magic 8 Ball will return divine insight!");//method stub
Console.ReadLine();
Console.WriteLine("'n" + "Magic Eight Ball Say: " + responses[luckyEight]);
Console.WriteLine("'n" + "confusius say, " + confusiusSays[luckySix]);
Console.WriteLine("'n" + "Your lucky card For today is: " + yourCard[luckyFiftyTwo]);
}
static void Main(string[] args) //This is the 'driver' method
{
Program myMethodDriver = new Program();
myMethodDriver.Magic8ball();
//look up 'Console.close'
Console.Read();
}
}
}
一种方法是让GetFortune()返回最后一个结果 - 将其保存在局部变量中：
string lastCard;
do
{
lastCard = GetFortune();
} while (PlayAgain()); //while they keep wanting to play
Console.WriteLine("Thank you for consulting the wisdom of the Magic 8 Ball.");
Console.WriteLine("'n" + "Your lucky card For today is: " + lastCard);
GetFortune()应如下所示：
public string GetFortune() //produces random results
{
// ...
return yourCard[luckyFiftyTwo];
}
作为旁注（语法），您可以使用内联语法初始化数组，如下所示：
String[] responses = new String
{
"It is certain.",
"It is decidedly so.",
"Yes definitely.",
"You may rely on it.",
// etc
};