Part 11 - C# Tutorial - switch statement

The C# switch statement executes one statement from multiple conditions. It is like if-else-if ladder statement in C#.

Syntax:

1. switch(expression){    
2. case value1:    
3.  //code to be executed;    
4.  break;  
5. case value2:    
6.  //code to be executed;    
7.  break;  
8. ......    
9.     
10. default:     
11.  //code to be executed if all cases are not matched;    
12.  break;  
13. }    

 

C# Switch Example

1. using System;  
2.   public class SwitchExample  
3.     {  
4.       public static void Main(string[] args)  
5.       {  
6.           Console.WriteLine("Enter a number:");  
7.           int num = Convert.ToInt32(Console.ReadLine());  
8.   
9.           switch (num)  
10.           {  
11.               case 10: Console.WriteLine("It is 10"); break;  
12.               case 20: Console.WriteLine("It is 20"); break;  
13.               case 30: Console.WriteLine("It is 30"); break;  
14.               default: Console.WriteLine("Not 10, 20 or 30"); break;  
15.           }  
16.       }  
17.     }  

Output:

Enter a number:
10
It is 10

Output:

Enter a number:
55
Not 10, 20 or 30

Note: In C#, break statement is must in switch cases.