Define Switch statement.

Anonymous User 848 21 Jan 2020

Please tell me what is switch statement with its flow chart and with example.

Ask by Anonymous User

Updated 21 Jan 2020

1 Answers

Nishi Tiwari 21 Jan 2020

Switch is a selection statement to execute a single statement from a list of multiple statement based on pattern match with the expression.

The switch expression is used with integer type such as int, char, byte, or short, an enumeration type, or of string type. The expression is checked for various cases and the one match is executed.

Switch can be used in place of if-else statement to provide better readability of code.

Syntax

switch(expresion)

{ case value1:

//statement to execute

break;

case value2:

//statement to execute

break;

…….

…….

default:

//statement to execute if no case matches

break; 

}

Why do we use Switch Statements instead of if-else statements?

We generally use a switch statement instead of if-else statements because if-else statement works only for a small number of logical evaluations of a value. If we use if-else statement for a larger number of possible conditions then, it will take more time to write and also become difficult to read.

// C# program to illustrate 

// switch case statement 

using System; 

  

public class GFG { 

  

    // Main Method 

    public static void Main(String[] args) 

    { 

        int nitem = 5; 

        switch (nitem) { 

  

        case 1: 

            Console.WriteLine("case 1"); 

            break; 

  

        case 5: 

            Console.WriteLine("case 5"); 

            break; 

  

        case 9: 

            Console.WriteLine("case 9"); 

            break; 

  

        default: 

            Console.WriteLine("No match found"); 

            break; 

        } 

    } 

}

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Define Switch statement.

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