Switch performs the code block that matches the case value. If the value matches none of the cases, the default block is executed.

Syntax:

switch ( integer/character expression )
{  
case {value 1} :  
do this ;
 
case {value 2} :  
 do this ;  
 
default :  
do this ;
 }

The expression after the switch can be either an integer or a character expression. Keep in mind that case labels should be unique for each case. If they are the same, it may cause an issue while running a programme. We usually use a colon at the end of the case labels ( : ). Each case is linked to a block. A block is a collection of statements that are grouped together for a specific case.

Example:

#include <iostream>
using namespace std;
 
int main()
{
    int i = 2;
    switch (i)
    {
    case 1:
        cout << "Statement 1" << endl;
        break;
 
    case 2:
        cout << "Statement 2" << endl;
        break;
 
    default:
        cout << "Default statement!" << endl;
    }
}

Output:

Statement 2

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