Thursday, 31 December 2015
The switch statement which allows you to compare an expression with a number of different values.
Syntax of C#.NET Switch statement
switch(variable)
{
case value1:
statements;
break;
case value2:
statements;
break;
-------------------
-------------------
-------------------
default:
statements;
break;
Example program using C#.NET switch statement
Program
Syntax of C#.NET Switch statement
switch(variable)
{
case value1:
statements;
break;
case value2:
statements;
break;
-------------------
-------------------
-------------------
default:
statements;
break;
Example program using C#.NET switch statement
Program
using System;
namespace Switch
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Enter number");
int no = Convert.ToInt32(Console.ReadLine());
switch (no)
{
case 1:
Console.WriteLine("One");
break;
case 2:
Console.WriteLine("Two");
break;
default:
Console.WriteLine("Invalid");
break;
}
Console.ReadKey();
}
}
}
Output
Enter number
1
One
Output
Enter number
2
Two
Output
Enter number
12
Invalid
Explanation
In the above example we can give input is 1 it prints output as One, input is 2 print output as Two, if we can give input is any number except 1 and 2 the output prints Invalid because if we can give input is 1 compiler executes case1 and we give i/p is 2 executes case2 then print output as One and Two. We give any other number except 1 and 2 default case will execute and prints Invalid.
Example program for C#.NET switch statement
Program
using System;
namespace Switch2
{
class Program
{
static void Main(string[] args)
{
int i = 4;
switch (i)
{
case 1:
case 2:
case 3:
Console.WriteLine("One");
break;
case 4:
case 5:
Console.WriteLine("Two");
goto case 1;
default:
Console.WriteLine("Invalid");
break;
}
Console.ReadKey();
}
}
}
Output
Two
One
Explanation
In the above example we can assign i value as 4. So directly case 4 is executed and print output is Two, next no break statement is available. instead of break we write goto statement as goto case1,then after the execution go and starts from case1 then the output one will be printed. Finally the output will be Two and One printed line by line.
