Question

代码：

string[] numbers = new string[2];
for (int i = 0; i < numbers.Length; i++)
{
    numbers[i] = Console.ReadLine();
    if (int.TryParse(numbers[i], out int numberTry) && i == 0)
        Console.WriteLine("That would be a number yes.");

    else if (int.TryParse(numbers[i], out numberTry))
        Console.WriteLine("Lovely work! That is indeed two numbers!");

    else
    {
        Console.Clear();
        Console.WriteLine("That's not a number. I am dissapointed.");
        Console.ReadKey();
        Environment.Exit(0);
    }
}

我的问题是我不能在循环之外使用数字[]作为int，因为它从循环中的字符串转换为int。我需要能够使用方法作为int发送它来对数字[0]和数字[1]执行操作。提前谢谢！

Answer 1

你能尝试一下吗？它应该工作。

    int[] numbers = new int[2];
    for (int i = 0; i < numbers.Length; i++)
    {
        var number = Console.ReadLine();
        if (int.TryParse(number, out int numberTry) && i == 0)
        {
            Console.WriteLine("That would be a number yes.");
            numbers[i] = numberTry;
        }
        else if (int.TryParse(number, out numberTry))
        {
            Console.WriteLine("Lovely work! That is indeed two numbers!");
            numbers[i] = numberTry;
        }
        else
        {
            Console.Clear();
            Console.WriteLine("That's not a number. I am dissapointed.");
            Console.ReadKey();
            Environment.Exit(0);
        }
    }

    Console.ReadKey();

C＃如何使用循环外部的变量在循环内从string更改为int？

1 个答案: