switch example in c++

Example 1: c++ switch multiple cases

#include <iostream> 
using namespace std; 
  
int main() { 
    // variable declaration 
	int input;
	switch(input){
	case 1: case 2: case 3: case 4:
		//executes if input is 1, 2, 3, or 4
		break;
	case 5: case 6: case 7:
		//executes if input is 5, 6, or 7
        break;
	default:
		//executes if input isn't any of the cases
    }
    return 0; 
}

Example 2: switch c++

switch(expression) {
   case 1:
      //equivalent to if(expression == 1){//do someting...}
      //do something...
      break; 
    //if case 1 is true the rest of the statments arn't 
    //evaluated because of the break
   case 45:
      //equivalent to else if(expression == 45){//do someting...}
      //do something...
      break;
    
   // you can have any number of case statements and default has to be last
   default :
      // equivalent to else{//do someting...}
      //do something...
}

switch(expression) {
   case 1:
      //equivalent to if(expression == 1){//do someting...}
      //do something...
   case 45:
      //equivalent to if(expression == 45){//do someting...}
      //do something...
   default :
      //always runs if there are no breaks in any of the cases
      //do something...
}

//modification of answer by Homeless Hoopoe