c# - 在 C# 中，我试图显示上一个 WriteLine 方法中的文本字符串。出现编译器错误

Question

    using System;
    using static System.Console;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    //My Baseball application named BatStat
    namespace BatStat
    {
        class Program
        {
            static void Main()
            {
                //My declared variables that hold the user input in memory
                string teamName;
                string[] playerName = new string[9];
                string[] playerPosition = new string[9];
                int[] atBats = new int[9];
                int[] hits = new int[9];
                float teamBA = 0;

                //Begin program by requesting user to enter team name value
                WriteLine("Welcome to Bat Stat, enter team name");
                teamName = Console.ReadLine();

                //Traverse all arrays and accumalate values from user input
                for (int i = 0; i < playerName.Length; i++)
                {
                    WriteLine("Enter players name");
                    playerName[i] = ReadLine();
                    WriteLine("Enter Players Position");
                    playerPosition[i] = ReadLine();
                    WriteLine("Enter Players at bats");
                    atBats[i] = Convert.ToInt32(ReadLine());
                    WriteLine("Enter Players hits");
                    hits[i] = Convert.ToInt32(ReadLine());
                }

                //Display top row menu for Bat Stat table
                WriteLine("{0, -10}{1, -10}{2, -5}{3, -5}{4, -5}{5, -5}", "Team", "Player", "Pos", "AB", "H", "BA");

                //for loop to traverse the arrays and display user input data
                for (int x = 0; x < playerName.Length; ++x)
                {
                    float playerBA = (float) hits[x] / atBats[x];
                    WriteLine("{0, -10}{1, -10}{2, -5}{3, -5}{4, -5}{5, -4}", teamName, playerName[x], playerPosition[x], atBats[x].ToString("d"), hits[x].ToString("d"), playerBA.ToString("F3"));
                }
                {
                    //Display the team batting average
                    float teamBA = hits[] / atBats[];
                    WriteLine("The batting average for the {0} is {1}", teamName, teamBA.ToString("F3"));
                }
            }
        }
    }

如何通过使用 teamBA 变量来保存命中/atBats 的值来输出最终 WriteLine 方法的字符串？ Visual Studio 表示 teamBA 未在此范围内声明。两个数组 hit 和 atBats 正在注册语法错误的错误；预期值。除了最后一个 WriteLine 方法之外，一切正常。

Answer 1

在

for (int x = 0; x < playerName.Length; ++x)
{
    float playerBA = (float) hits[x] / atBats[x];
    WriteLine("{0, -10}{1, -10}{2, -5}{3, -5}{4, -5}{5, -4}", teamName, playerName[x], playerPosition[x], atBats[x].ToString("d"), hits[x].ToString("d"), playerBA.ToString("F3"));
}
{
    //Display the team batting average
    float teamBA = hits[] / atBats[];
    WriteLine("The batting average for the {0} is {1}", teamName, teamBA.ToString("F3"));
}

• 第二个 block 的用途是什么，它不在您的 for 循环中。
• 您已经重新声明了第二次float teamBA，第一次位于您方法的顶部
• hits[]/atBats[] 没有任何意义，你不能分割数组。您必须放置一个类似 hits[2]/atBats[2]
的索引