C# 中的骰子游戏，带开关/外壳不工作

Question

So i wanted to make a simple dice roll game in c# with switch and case but when I start the case statements don't print anything. I hope one of you guys can help me there because as you can see I am a complete beginner.

using System;
using System.Threading;
namespace Übung
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            Random r = new Random();
            int rnd = Random.Range(1, 7);

            Console.WriteLine("Möchten sie WÜrfeln? \n ja? \n nein?");
            string s = Console.ReadLine();

            if (s == "ja")
            {
                switch (rnd)
                {
                    case 1:
                        Console.WriteLine("Ihr WÜrfel hat die Zahl 1 ergeben");
                        break;
                    case 2:
                        Console.WriteLine("Ihr WÜrfel hat die Zahl 1 ergeben");
                        break;
                    case 3:
                        Console.WriteLine("Ihr WÜrfel hat die Zahl 1 ergeben");
                        break;
                    case 4:
                        Console.WriteLine("Ihr WÜrfel hat die Zahl 1 ergeben");
                        break;
                    case 5:
                        Console.WriteLine("Ihr WÜrfel hat die Zahl 1 ergeben");
                        break;
                    case 6:
                        Console.WriteLine("Ihr WÜrfel hat die Zahl 1 ergeben");
                        break;
                    }
            }
            else
            {
                return;
            }
        }
    }
}

Answer 1

This seems problematic:

Random r = new Random();
int rnd = Random.Range(1, 7);

Random.Range is part of Unity3D and requires using the UnityEngine namespace - is that what you meant to use? If not, and you're writing a plain .NET console app, you probably meant to write:

Random r = new Random();
int rnd = r.Next(1, 7);

By the way, a better way to print out the result would be to include it as part of the string you are printing, rather than using a switch case enumerating all possible values. That is, you can replace the entire switch statement with this:

Console.WriteLine($"Ihr WÜrfel hat die Zahl {rnd} ergeben");

Answer 2

Use rand as follows:

int rnd = Random.Range(1, 7);

Random.Range() accepts arguments the first argument is inclusive and the second argument is exclusive. In our case, we want a random number between 1 and 6 inclusive both hence we pass the arguments 1 and 7 where 7 is exclusive