need of switch case in c code example

Example 1: switch statement in c

#include <stdio.h>

int main(void)
{
  	int a = 0;
  
    switch(a)
    {
       case 1 :
          statement("a = 1");
          break;

       case 2 :
          printf("a = 2");
          break;

       default :
       	  printf("a is neither 1 or 2");
	      break;
    }
}

Example 2: switch case in c syntax

switch( expression )
{
	case value-1:
			Block-1;
			Break;
	case value-2:
			Block-2;
			Break;
	case value-n:
			Block-n;
			Break;
	default:
			Block-1;
			Break;
}
Statement-x;