Enumeration instance Analysis

One. Enumeration:

• Declaration of enum: enum A {A, B, c};
  
• An enum declaration differs from an array in that it can only be declared outside the main () method body and can be called in Main ().
• an enum can access an enumerated value by adding an enumeration name to the enumerated element. Cases:
  int i = (int) a.a

   Public enumSun//defining enum Types{Monday=1,//do not write, the default is 0,1,2,3,4 ...Tuesday//It's just that the number starts to increment. Enumeration values can be the sameWednesday, Thursday, Friday, Saturday, Sunday}Static voidMain (string[] args) {Console.WriteLine ("to enter the test for the enumeration:"); Console.WriteLine ("*******************************************"); Console.WriteLine ("* Please enter 1--7 to test (8 for exit): *"); Console.WriteLine ("*******************************************"); intDay ;  while(true)//This type of writing is more relevant in ASP.{Console.Write ("Please enter a number test:"); int. TryParse (Console.ReadLine (), outDay);//conversion Failure Day returns to "0"        if(Day = =0) {Console.WriteLine ("the number entered is not legal!! Please enter 1--7 to test (8 for exit)"); }        if(Day >8|| Day <0)//programming as far as possible to make their own procedures rigorous, here to determine the value of illegal{Console.WriteLine ("the number entered is not within the range, please enter 1--7 to test (8 for exit)"); }        if(Day = =8)//termination conditions for exit{Console.WriteLine ("Successful exit Loop");//Successful exit Loop             Break;//the code after break will not be executed.Console.WriteLine ("Exit Loop");//This code does not execute        }        Switch(Sun) Day)//string that corresponds to the enumeration value: (Sun) Day content is the string corresponding to the enumeration value        {             CaseSun. Monday: Console.WriteLine ("this is Monday .");  Break;  CaseSun. Tuesday: Console.WriteLine ("this is Tuesday .");  Break;  CaseSun. Wednesday: Console.WriteLine ("this is Wednesday .");  Break;  CaseSun. Thursday: Console.WriteLine ("this is Thursday .");  Break;  CaseSun. Friday: Console.WriteLine ("this is Friday .");  Break;  CaseSun. Saturday: Console.WriteLine ("this is Saturday .");  Break;  CaseSun. Sunday: Console.WriteLine ("this is Sunday .");  Break; }} console.readkey ();}

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Enumeration instance Analysis