What is a switch staement in c#

C# - switch

C# includes another decision-making statement called switch. The switch statement executes the code block depending upon the resulted value of an expression. 
Syntax:
  1. switch(expression)
    {
        case <value1>
            // code block
            break;
        case <value2>
            // code block
            break;
        case <valueN>
            // code block
            break;
        default 
            // code block
            break;
    }

As per the syntax above, switch statement contains an expression into brackets. It also includes multiple case labels, where each case represents a particular literal value. The switch cases are seperated by a break keyword which stops the execution of a particular case. Also, the switch can include a default case to execute if no case value satisfies the expression.


Consider the following example of a simple switch statement.
Example: switch

  1. int x = 10;
    
    switch (x)
    { 
        case 5:
            Console.WriteLine("Value of x is 5");
            break;
        case 10:
            Console.WriteLine("Value of x is 10");
            break;
        case 15:
            Console.WriteLine("Value of x is 15");
            break;
        default:
            Console.WriteLine("Unknown value");
            break;
    }


The switch statement can include expression or variable of any data type such as string, bool, int, enum, char etc.

Example: switch statement

  1. string statementType = "switch";
    
    switch (statementType)
    {
        case "if.else":
            Console.WriteLine("if...else statement");
            break;
        case "ternary":
            Console.WriteLine("Ternary operator");
            break;
        case "switch":
            Console.WriteLine("switch statement");
            break;
    }



Goto in switch:

The switch case can use goto to jump over a different case.
Example: goto in switch case 

  1. string statementType = "switch";
    
    switch (statementType)
    {
        case "DecisionMaking":
            Console.Write(" is a decision making statement.");
            break;
        case "if.else":
            Console.Write("if-else");
            break;
        case "ternary":
            Console.Write("Ternary operator");
            break;
        case "switch":
            Console.Write("switch statement");
            goto case "DecisionMaking";
    }





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