Question

我最近开始研究C＃，我开始根据关于笑话的流程图（http://prntscr.com/jo656t）制作简单的程序。

然而，当我在流程图中关于“你想听到另一个笑话吗？”时我绝对不知道怎么循环这个。

这是代码。

class Program
{
    static void Main(string[] args)
    { 
        Console.BackgroundColor = ConsoleColor.Black;
        Console.ForegroundColor = ConsoleColor.White;

        string Name;

        Console.WriteLine("What is your name? ");
        Name = Console.ReadLine();
        Console.Write(Name);
        Console.Clear();

        Console.WriteLine("What is your age?");
        int Age = Convert.ToInt16(Console.ReadLine());
        Console.Write(Age);
        Console.Clear();

        string[] jokes = new string[] { "Joke1", "Joke2", "Joke3", "Joke4" };
        int upper = jokes.GetUpperBound(0);
        int lower = jokes.GetLowerBound(0);

        Random rnd = new Random();
        int jk = rnd.Next(lower, upper + 1);     

        if (Age >= 16)
        {
            Console.WriteLine("Do you want to hear a joke?"); 
            string option = Console.ReadLine();

            if (option == "yes")
            {
                Console.WriteLine(jokes[jk]);
                Console.Read();

                Console.WriteLine("Do you want to hear another joke?");
                string option2 = Console.ReadLine();

                int i; 
                if (option2 == "yes")
                {
                    i = 0;
                }
                else
                {
                    i = 1;
                }

                do
                {
                    Console.WriteLine(jokes[jk]);
                    Console.Read();
                } while (i == 0); 
            } 
            else
            {
                Console.WriteLine("Have a nice day, " + Name);
                Console.Read();
            } 
        }
        else
        {
            Console.WriteLine("What a pitty! You're too young to hear this joke!");
            Console.Read();
            Console.WriteLine("Have a nice day, " + Age);
        }
    }

我不知道，因为我完全陷入困境，所以我们将不胜感激。

提前致谢！

Answer 1

就个人而言，我会尝试重写代码，使其更具可读性，但这样的事情应该有效：

bool keepTellingJokes = true;    

while (keepTellingJokes) 
{
    // your joke code here

    Console.WriteLine("Do you want to hear another joke?");
    string option2 = Console.ReadLine();

    // break out of loop
    if (option2 == "no")
    {
        keepTellingJokes = false;
    } 
}
// code after escaping joke loop

免责声明：我不会每天写c＃。

Answer 2

该流程图可以细分为三个主要部分：

询问初步问题以决定是否应该开始讲笑话
讲笑话
结束程序

中间部分（从msgbox "joke()"到msgbox "would you like to hear another joke?"）使用do / while循环进行编码。将它作为一个单独的方法是有用的：

private static void TellJokes() {
    bool shouldContinue;
    do {
        shouldContinue = true;
        ... // Tell a joke, ask if they liked it, and ask if they want more
        if (answer == "no") {
            shouldContinue = false;
        }
    } while (shouldContinue);
}

请注意，您可以将"Have a nice day!"的打印移动到程序的底部，因为无论如何所有分支都会打印出来。

Answer 3

你可以这样做

    Random rnd = new Random();
    int jk;  
    string option;

    if (Age >= 16)
    {
        Console.WriteLine("Do you want to hear a joke?"); 
        option = Console.ReadLine();

        while (option == "yes")
        {
            jk = rnd.Next(lower, upper + 1);    
            Console.WriteLine(jokes[jk]);
            Console.Read();

            Console.WriteLine("Do you want to hear a joke?"); 
            option = Console.ReadLine();
        } 
        Console.WriteLine("Have a nice day, " + Name);
        Console.Read();
    }
    else
    {
        Console.WriteLine("What a pitty! You're too young to hear this joke!");
        Console.Read();
        Console.WriteLine("Have a nice day, " + Age);
    }

我建议关注用户的答案，你可能会做这样的事情

do
{
        Console.WriteLine("Do you want to hear a joke?"); 
        option = Console.ReadLine();
}
while((option.ToLower() != "yes") || (option.ToLower() != "no") )

C＃中的连续循环

3 个答案: