Question

//dice throws to arrays
        int throws = 1;
        int[] oneDice = new int[throws];
        int[,] twoDice = new int[throws,throws];

        Console.WriteLine("Number of throws: ");
        throws = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Trows one dice "+throws+" times: ");
        for (int i = 0; i < throws; i++)
        {
            Random random = new Random();
            oneDice[i] = random.Next(6);
            Console.WriteLine(oneDice[i]);

        }

它说我的阵列oneDice是出界的，但我不明白为什么......请帮我搞清楚。

Answer 1

你做错了就是用1声明你的数组，然后改变你的变量。更改变量不会更改您的数组声明，因此您必须承担索引超出范围的错误。

此外，您需要在random之前添加loop变量声明，以便每次都能获得不同的结果。

试试这个

Console.WriteLine("Number of throws: ");
        int throws = Convert.ToInt32(Console.ReadLine());
        int[] oneDice = new int[throws];
        int[,] twoDice = new int[throws, throws];
        Console.WriteLine("Trows one dice "+throws+" times: ");
        Random random = new Random();
        for (int i = 0; i<throws; i++)
        {
           // Random random = new Random();
        oneDice[i] = random.Next(6);
            Console.WriteLine(oneDice[i]);

        }

Answer 2

        Console.WriteLine("Number of throws: ");
        int throws = Convert.ToInt32(Console.ReadLine());
        int[] oneDice = new int[throws];
        int[,] twoDice = new int[throws, throws];
        Console.WriteLine("Throws one dice " + throws + " times: ");
        Random random = new Random();

        for (int i = 0; i < throws; i++)
        {
            oneDice[i] = random.Next(6);
            Console.WriteLine(oneDice[i]);
        }

错误是由您最初将数组的长度定义为1引起的。首先读取抛出的数量然后创建数组然后就没有问题。

数组在for循环中超出范围

2 个答案: