Question

我需要帮助。我需要提示用户输入介于0和9之间的索引。如果用户输入了数组之外的内容，那么我需要使用＆＃34; if＆＃34;声明或＆＃34;尝试捕获＆＃34;告诉用户＆＃34;不存在这样的分数＆＃34;。这是我到目前为止所做的。

public class Program
{
  public static void Main(string[] args)
  {
    int[] GameScores = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

    Console.WriteLine("Please enter an index between 0 and 9");
    int gamescores = int.Parse(Console.ReadLine());

    for (int i = 0; i < GameScores.Length;i++)
    {
       GameScores[i] = int.Parse(Console.ReadLine());
    }

  } // end Main

Answer 1

试试这个

       int[] GameScores = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        Console.WriteLine("Please enter an index between 0 and 9");
        int gamescores = int.Parse(Console.ReadLine());
        if (gamescores >= 0 && gamescores<=9)
        {

            for (int i = 0; i < GameScores.Length; i++)
            {
                GameScores[i] = int.Parse(Console.ReadLine());
            }
        }
        else
        {
            Console.WriteLine("Number not valid");
        }

Answer 2

灵活的解决方案是：

public static void Main(string[] args)
{
     int scoreSize = 10;
     int[] gameScores = Enumerable.Range(1, scoreSize).ToArray();
     Console.WriteLine("Please enter an index between 0 and {0}", gameScores.Length - 1);
     int selectedIndex = Convert.ToInt32(Console.ReadLine());
     if(selectedIndex >= 0 && selectedIndex < gameScores.Length)
          for(int i = 0; i < gameScores.Length; i++)
               gameScores[i] = Convert.ToInt32(Console.ReadLine());
     else
         Console.WriteLine("No such score exists");
}

这样，如果您将scoreSize更改为20，例如。

int scoreSize = 20;

该计划仍将按预期运作，无需进一步更改。

Answer 3

非常简单 -

    public static void Main(string[] args)
    {
        int[] GameScores = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

        Console.WriteLine("Please enter an index between 0 and 9");
        int gamescores = int.Parse(Console.ReadLine());

        if (gamescores < 0 || gamescores > 9)
        {
            Console.WriteLine("No such score exists");
        }
        else
        {
            for (int i = 0; i < GameScores.Length; i++)
            {
                GameScores[i] = int.Parse(Console.ReadLine());
            }
        }
    }`

Answer 4

您可以直接使用contains来检查数组中是否存在所需的值，而不是使用For循环。试试这个。

        int[] GameScores = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        Console.WriteLine("Please enter an index between 0 and 9");
        int gamescores = int.Parse(Console.ReadLine());

        if (GameScores.Contains(gamescores))
        {
            Console.WriteLine("score exists");
        }
        else
        {
            Console.WriteLine("No such score exists");
        }

使用数组提示用户输入和显示用户输出

4 个答案: