C# 代码示例_结构/数组/枚举...

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;

 namespace ConsoleApplication1
 {
     class Program
     {
         //Enum Definition
         enum orientation : byte
         {
             north=,
             south=,
             east=,
             west=
         }

         //Structure Definition
         struct route
         {
             public orientation direction;
             public double distance;
         }

         static void Main(string[] args)
         {
             #region regionTest
             Console.WriteLine("From the beginning again.");
             Console.ReadLine();
             #endregion 

             //Type Conversion
             /* Keyword for OverflowException check: checked, unchecked
              * or you can configure the application:
              * 1) Right click the project in Solution Explorer panel,select 'Properties' from context menu
              * 2) Select 'Build' in the left navigation bar, click 'Advanced' button.
              * 3) Tick off 'Check for arithmetic overflow/underflow' checkbox, click 'OK'.
              */
             byte destinationVar;
             short sourcevar = ;
             destinationVar = checked((byte)sourcevar);      //will popup an error when running
             Console.WriteLine("destinationVar val:{0}", destinationVar);

             //Enum practice
             byte directionByte;
             string directionString;
             orientation myDirection = orientation.north;
             Console.WriteLine("myDirection = {0}",myDirection);
             directionByte = (byte)myDirection;  //must use explicit conversion even though it's of byte.

             //enum to string
             directionString = Convert.ToString(myDirection);
             directionString = myDirection.ToString();   // same rsult as the one above
             Console.WriteLine("byte equivalent = {0}",directionByte);
             Console.WriteLine("string equivalent={0}",directionString);

             //string to enum
             string myString = "east";
             orientation yourDirection = (orientation)Enum.Parse(typeof(orientation), myString);

             ////Struct practice
             route myRoute;
             int intDirection = -;
             double doubleDistence;
             Console.WriteLine("1) North\t2) South\t3) East\t4) West");
             do
             {
                 Console.WriteLine("Select a direction:");
                 intDirection = Convert.ToInt32(Console.ReadLine());
             } while (intDirection <  || intDirection > );
             Console.WriteLine("Input a distance:");
             doubleDistence = Convert.ToDouble(Console.ReadLine());
             myRoute.direction = (orientation)intDirection;
             myRoute.distance = doubleDistence;
             Console.WriteLine("myRoute specifies a direction of {0} and a distance of {1}.", myRoute.direction, myRoute.distance);

             //Array Definition
             int[] firstArrary = {,,,,};
             int[] secondArray=new int[];
             int[] thirdArrary = new int[] { ,,}; //the number should be the same.
             const int count = ;
             int[] forthArray = new int[count];

             //multidimensional array
             double[,] multiArray1 = new double[, ];
             double[,] multiArray2 = { {,},{,},{,}};

             //jagged array
             int[][] jaggedArray = new int[][];
             jaggedArray[]=new int[];
             jaggedArray[] = new int[];

             int[][] jaggedArray2 = { new int[]{,}, new int[]{}, new int[]{,}};
             foreach (int[] divisorsOfInt in jaggedArray2)
             {
                 foreach (int divisor in divisorsOfInt)
                 {
                     Console.WriteLine(divisor);
                 }
             }

             //String Manipulation
             string mystring = "Happy New Year";
             char[] mychars = mystring.ToCharArray();
             foreach (char character in mystring)
             {
                 Console.WriteLine("{0}", character);
             }

             Console.ReadLine();

         }
     }
 }