使用C＃中的foreach循环将项目添加到数组

Question

我正在尝试做一项作业，要求使用foreach循环将项目添加到数组。 我使用for循环来完成它，但是无法通过foreach循环来解决它。

这就是我需要的，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];
        }

抱歉，如果有人提出这个问题，但我找不到可以帮助我的答案。

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

您应该有一个类似的课程：

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

和foreach一样：

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

也许您的意思是这样的：

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();
}

如果必须使用数组，则如下所示：

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++];
}