C#控制台应用随机数生成

Question

如何让随机数生成器方法循环并产生新的随机数？我需要一个单独的类来处理随机数生成吗？如果是这样，我如何将这些变量的作用域传递到主函数Main中？控制台应用程序应该使用循环重复整数数学问题，条件是正确或错误的答案。此外，我忽略了哪种语法来循环回到新的随机生成整数实例？TIA。

    public class Multiplication
    {
        public static void Main(string[] args)
        {
            Random randomNumbers = new Random(); // random number generator
            int num01 = randomNumbers.Next(1, 11);
            int num02 = randomNumbers.Next(1, 11);
            int value = 0;
            while (true)
            {
                if (value != -1)
                {
                    Console.Write("Please enter the answer to {0} x {1} = ?", num01, num02);
                    int product = num01 * num02;
                    Console.WriteLine();
                    int answer = Convert.ToInt32(Console.ReadLine());

                    while (product != answer)
                    {
                        Console.WriteLine("Incorrect, enter another guess: ");
                        answer = Convert.ToInt32(Console.ReadLine());
                    }
                    Console.WriteLine("Correct. Your answer was {0} \n {1} x {2} = {3} Very good!",
                        answer, num01, num02, product);
                    //keep console open
                    Console.WriteLine();
                    Console.WriteLine("Press - 1 to exit");
                    value = Convert.ToInt32(Console.ReadLine());
                }
                else
                {
                    break;
                }
            }
        }
    }

- Big T War

Answer 1

将随机数生成放在循环内部，而不是在循环之前。

        int value = 0;
        while (true)
        {
            if (value != -1)
            {
                int num01 = randomNumbers.Next(1, 11);
                int num02 = randomNumbers.Next(1, 11);
                ...

- Douglas Zare

---

是的，我的哨兵控制循环有问题，因为我仍然只得到一个乘法问题的迭代。 - Big T War

@BigTWar：它是否退出循环，还是你得到相同的数字？ - Douglas Zare

循环用于错误答案，但在输入正确答案后停止。 - Big T War

Answer 2

随机数生成语句必须在循环中。我需要调整控制台输出语句，加上“输入1继续”的提示。最终代码如下：

public class Multiplication
{
    public static void Main(string[] args)
    {
        int value = 1;
        while (true)
        {
            if (value == -1)
            {
                break;
            }
            else
                {
                    Random randomNumbers = new Random(); // random number generator
                    int num01 = randomNumbers.Next(1, 11);
                    int num02 = randomNumbers.Next(1, 11);
                    Console.Write("Please enter the answer to {0} x {1} = ?", num01, num02);
                    int product = num01 * num02;
                    Console.WriteLine();
                    int answer = Convert.ToInt32(Console.ReadLine());

                    while (product != answer)
                    {
                        Console.WriteLine("Incorrect, enter another guess: ");
                        answer = Convert.ToInt32(Console.ReadLine());
                    }
                    Console.WriteLine("Correct. Your answer was {0} \n {1} x {2} = {3} Very good!",
                        answer, num01, num02, product);
                    //keep console open
                    Console.WriteLine();
                    Console.WriteLine("Press - 1 to exit or 1 to continue");
                    value = Convert.ToInt32(Console.ReadLine());
                }
        }
    }
}

- Big T War