从文件到数组的数据 [英] Data from a file into an array

问题描述

基本上，我有一个名为grades.txt的文件，我需要从中输入数据(数字列表)并将这些数字添加到数组中，以便获得平均值.到目前为止，这就是我所拥有的，它当前从文件中获取数字并显示它们 但是我不确定如何将它们添加到数组中?

basically I have a file that is named grades.txt and I need to input the data from it (a list of numbers) and add those numbers to an array so I can get the average. so far this is what I have, it currently gets the numbers from the file and displays them but I'm not sure how to add them to an array?

 课程计划
    {
      静态void Main(string [] args)
       {

  class Program
    {
        static void Main(string[] args)
        {

推荐答案

使用TryParse将每一行转换为数字.

Use TryParse to convert each line to a number.

https://msdn.microsoft.com /en-us/library/system.int32.tryparse%28v=vs.110%29.aspx

接下来，设置一个变量以跟踪数组中元素的数量.将其初始化为零，并在每次读取一行时将其递增一.然后，使用该数字作为数组的索引.将该索引处的元素设置为您得到的数字 从TryParse返回.

Next, set a variable to keep track of how may elements there are in the array. Initialise it to zero, and increment it by one each time you read a line. Then, use that number as an index into the array. Set the element at that index to the number you get back from TryParse.

您还可以考虑使用List< int>而不是数组(除非您要处理专门告诉您使用数组的作业问题).

You might also consider using List<int> rather than an array (unless you are dealing with a homework question that specifically tells you to use an array).

https://msdn.microsoft.com/zh-CN /library/6sh2ey19%28v=vs.110%29.aspx

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