枚举与结构体

水深无声 2022-03-29 13:26 245阅读 0赞

1、结构体和枚举一样，都是在代码的主体外部声明的。

1 using System;
     2 using System.Collections.Generic;
     3 using System.Linq;
     4 using System.Text;
     5 
     6 namespace StructEnum
     7 {
        
     8     enum orientation : byte
     9     { 
    10         north = 1,
    11         south = 2,
    12         east = 3,
    13         west = 4
    14     }
    15     struct route
    16     {
        
    17         public orientation direction;
    18         public double distance;
    19     
    20     }
    21     class Program
    22     {
        
    23         static void Main(string[] args)
    24         {
        
    25             route myRoute;
    26             double myDistance;
    27             int myDirection;
    28             myDistance = Convert.ToDouble(Console.ReadLine());
    29             myDirection = Convert.ToInt32(Console.ReadLine());
    30             myRoute.distance = myDistance;
    31             myRoute.direction = (orientation)myDirection;
    32             Console.WriteLine("distance:{0},direction:{1}",myRoute.distance,myRoute.direction);
    33         }
    34     }
    35 }

输入4 4

输出 4 west

2.C\#结构体与C结构体类似  
3.虽然枚举有类型，但是取枚举的值时，仍然需要进行类型转换

1 using System;
     2 using System.Collections.Generic;
     3 using System.Linq;
     4 using System.Text;
     5 
     6 namespace StructEnum
     7 {
        
     8     enum orientation:byte
     9     { 
    10         north = 1,
    11         south = 2,
    12         east = 3,
    13         west = 4
    14     }
    15     struct route
    16     {
        
    17         public orientation direction;
    18         public double distance;
    19         public int dirct;
    20     }
    21     class Program
    22     {
        
    23         static void Main(string[] args)
    24         {
        
    25             route myRoute,mRoute;
    26             double myDistance;
    27             int myDirection;
    28             myDistance = Convert.ToDouble(Console.ReadLine());
    29             myDirection = Convert.ToInt32(Console.ReadLine());
    30             myRoute.distance = myDistance;
    31             myRoute.direction = (orientation)myDirection;
    32             mRoute.dirct = orientation.north; //output north
    33             Console.WriteLine("distance:{0},direction:{1}",myRoute.distance,myRoute.direction);
    34             Console.WriteLine("mRoute.dirct={0}",mRoute.dirct);
    35         }
    36     }
    37 }

第32行，编辑错误。

把 mRoute.dirct = orientation.north; 改为 mRoute.dirct = (int)orientation.north;

输出mRoute.dirct = 1。