c# - 我如何为每个用户输入编号？ C#

Question

刚开始学习 C#，我的问题是如何按如下顺序记录用户输入:score 1:

score 1: 98
score 2: 76
score 3: 65
score 4: 78
score 5: 56

在我的代码中我可以输入数字但似乎无法设置顺序我怎样才能实现这个目标我的输入:

98
76
65
78
56

代码:

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

namespace MyGrade03
{
    public class Program
    {
        private int total;  // sum of grades
        private int gradeCounter; //number of grades entered
        private int aCount; // Count of A grades
        private int bCount; // Count of B grades
        private int cCount; // Count of C grades
        private int dCount; // Count of D grades
        private int fCount; // Count of F grades
        private string v;



        public string CourseName { get; set; }

        public Program(string name)
        {
            CourseName = name;
        }

        public void DisplayMessage()
        {
            Console.WriteLine("Welcome to the grade book for \n{0}!\n",
                CourseName);
        }

        public void InputGrade()
        {
            int grade;
            string input;

            Console.WriteLine("{0}\n{1}",
                "Enter the integer grades in the range 0-100",
                "Type <Ctrl> z and press Enter to terminate input:");

            input = Console.ReadLine(); //read user input

            while (input != null)
            {
                grade = Convert.ToInt32(input); //read grade off user input
                total += grade;// add grade to total
                gradeCounter++; //  increment number of grades

                IncrementLetterGradeCounter(grade);

                input = Console.ReadLine();
            }
        }
        private void IncrementLetterGradeCounter(int grade)

        {
            switch (grade / 10)
            {
                case 9: //grade was in the 90s
                case 10:
                    ++aCount;
                    break;
                case 8:
                    ++bCount;
                    break;
                case7:
                    ++cCount;
                case6:
                    ++dCount;
                    break;
                default:
                    ++fCount;
                    break;

            }
        }
        public void DisplayGradeReport()
        {
            Console.WriteLine("\nGrade Report");

            if (gradeCounter != 0)
            {
                double average = (double)total / gradeCounter;

                Console.WriteLine("Total of the {0} grades entered is {1}",
                    gradeCounter, total);
                Console.WriteLine("class average is {0:F}", average);
                Console.WriteLine("{0}A: {1}\nB: {2}\nC: {3}\nD: {4}\nF: {5} ",
                    "Number of students who received each grade: \n",
                   aCount,
                   bCount,
                   cCount,
                   dCount,
                   fCount);
            }
            else
                Console.WriteLine("No grades were entered");
        }
        static void Main(string[] args)
        {
            Program mygradebook = new Program(
                "CS101 introduction to C3 programming");
            mygradebook.DisplayMessage();
            mygradebook.InputGrade();
            mygradebook.DisplayGradeReport();
        }
    }
}

Answer 1

有很多数据结构可以让您按顺序存储数据。我个人推荐 List<int> 为此。

您可以简单地向其中添加内容:

var list = new List<int>();
list.Add(37);
list.Add(95);

您可以使用迭代器 (foreach(var score in list){...}) 读取它，也可以取出单个数字 (var firstScore = list[0])。该文档将告诉您更多有关 List<T> 可以做什么的信息。 .