Syntax
switch(variable/expression)
{
case <case_value1>:
statement(s);
break;
case <case_value2>:
break;
default:
break;
}
C# code to demonstrate an example of the switch statement
// C# program to demonstrate example of switch statement
using System;
using System.IO;
using System.Text;
namespace JustTechReview
{
class Test
{
// Main Method
static void Main(string[] args)
{
int day;
//input the day number
Console.Write("Enter day number (0-6): ");
day = Convert.ToInt32(Console.ReadLine());
//checking
switch (day)
{
case 0:
Console.WriteLine("Sunday");
break;
case 1:
Console.WriteLine("Monday");
break;
case 2:
Console.WriteLine("Tuesday");
break;
case 3:
Console.WriteLine("Wednesday");
break;
case 4:
Console.WriteLine("Thursday");
break;
case 5:
Console.WriteLine("Friday");
break;
case 6:
Console.WriteLine("Saturday");
break;
default:
Console.WriteLine("Invalid Input");
break;
}
//hit ENTER to exit the program
Console.ReadLine();
}
}
}
Output
First run:
Enter day number (0-6): 3
Wednesday
Second run:
Enter day number (0-6): 9
Invalid Input
C# code to check input character is a VOWEL or CONSOTANT using switch statement
// C# program to demonstrate example of switch statement
using System;
using System.IO;
using System.Text;
namespace Justtechreview
{
class Test
{
// Main Method
static void Main(string[] args)
{
char ch;
//input a character
Console.Write("Enter a character: ");
ch = Console.ReadLine()[0];
//checking for valid alphabet
if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'))
{
//checking for vowels
switch (ch)
{
case 'A':
case 'a':
case 'E':
case 'e':
case 'I':
case 'i':
case 'O':
case 'o':
case 'U':
case 'u':
Console.WriteLine("Input character {0} is a Vowel", ch);
break;
default:
Console.WriteLine("Input character {0} is a Consonat", ch);
break;
}
}
else
{
Console.WriteLine("Input character {0} is not a valid alphabet", ch);
}
//hit ENTER to exit the program
Console.ReadLine();
}
}
}
Output
First run:
Enter a character: X
Input character X is a Consonat
Second run:
Enter a character: i
Input character i is a Vowel
Third run:
Enter a character: $
Input character $ is not a valid alphabet