在 C# 中使用 foreach 循环将项目添加到数组

Question

我正在尝试做一项家庭作业，该作业需要使用 foreach 循环将项目添加到数组中。我使用 for 循环做到了，但使用 foreach 循环无法解决。

这是我需要的，只是在 foreach 循环中。

for (int i = 0; i < 5; i++)
        {
            Console.Write("\tPlease enter a score for {0} <0 to 100>: ",  studentName[i]);
            studentScore[i] = Convert.ToInt32(Console.ReadLine());
            counter = i + 1;
            accumulator += studentScore[i];
        }

很抱歉，如果有人问过这个问题，但我找不到对我有帮助的答案。

Answer 1

您可以使用 foreach 循环遍历名称数组并读取分数，如下所示

foreach(string name in studentName)
{
    Console.Write("\tPlease enter a score for {0} <0 to 100>: ", name);
    studentScore[counter] = Convert.ToInt32(Console.ReadLine());                
    accumulator += studentScore[counter];
    counter++;
}

Console.WriteLine(accumulator);
Console.ReadLine();

Answer 2

你应该有这样一个类：

class Student
{
    public string Name {get; set; }
    public int Score {get; set; }
}

还有一个foreach 喜欢：

var counter = 0;

foreach (student in studentsArray)
{
    Console.Write("\tPlease enter a score for {0} <0 to 100>: ",  student.Name);
    student.Score = Convert.ToInt32(Console.ReadLine());
    counter++;
    accumulator += student.Score;
}

Answer 3

也许你的意思是这样的：

var studentScores = new List<int>();
foreach (var student in studentName)   // note: collections really should be named plural
{
    Console.Write("\tPlease enter a score for {0} <0 to 100>: ",  student);
    studentScores.Add(Convert.ToInt32(Console.ReadLine()));
    accumulator += studentScores.Last();
}

如果你必须使用数组，那么是这样的：

var studentScores = new int[studentName.Length];    // Do not hardcode the lengths
var idx = 0;
foreach (var student in studentName)
{
    Console.Write("\tPlease enter a score for {0} <0 to 100>: ",  student);
    studentScores[idx] = Convert.ToInt32(Console.ReadLine());
    accumulator += studentScores[idx++];
}