Question

我正在尝试在struct Books中实现char数组。我已经在结构中声明了char数组public char [] b_id = new char [3]。现在我想访问b_id并初始化一些值。怎么做到呢。有什么建议？这是我现在的代码。

namespace @struct
{
   struct Books
    {
        public string title;
        public char[] b_id = new char[3];
    };  
class Program
{

    static void Main(string[] args)
    {

        Books Book1;        /* Declare Book1 of type Book */

       /* book 1 specification */
        Book1.title = "C Programming";


        /* print Book1 info */
        Console.WriteLine("Book 1 title : {0}", Book1.title);

        Console.ReadKey();

    }
}
}

Answer 1

您不能在结构中使用实例字段初始值设定项（即编译器不允许您直接在Books结构中初始化b_id字符数组）。如果您执行以下操作，您的程序应该可以运行：

struct Books
{
   public string title;
   public char[] b_id;
};

void Main()
{

   Books book1;        /* Declare Book1 of type Book */
   book1.b_id = new char[3] {'a', 'b', 'c'};

   /* book 1 specification */
   book1.title = "C Programming";

   /* print Book1 info */
   Console.WriteLine("Book 1 title : {0}", book1.title);
   Console.WriteLine("Book att : {0}", book1.b_id[0]);

 }

如何在c＃中使用struct里面的char数组？

1 个答案: