Question

what is the purpose of using break statement in switch case

Answer 1

Switch statement. In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via search and map.

Answer 2

When using switch case there are obviously two or more cases in it. So, whenever a case is being executed it is important that it gets terminated after executing that particular case.

Consider the example given below. If case B had a break statement then the output would've been "Well Done ! Your grade is B"  but since we didn't use a break statement in the below example the out put would be a combination of case B & case C. The reason it terminates at C is because there's a break statement.

Program:

char grade = B;

switch(grade) {

     case 'A' :

        printf("Excellent!\n" );

        break;

     case 'B' :

        printf("Well done !\n" );

     case 'C' :

        printf("You passed\n" );

        break;

     default :

        printf("Invalid grade\n" );

  }

  printf("Your grade is  %c\n", grade );

  return 0;

}

Output:

Well done

You passed

Your grade is  B