嵌套 switch 语句

#include <stdio.h>



int main () {



   /* local variable definition */

   int a = 100;

   int b = 200;



   switch(a) {



      case 100:

         printf("This is part of outer switch\n", a );



         switch(b) {

            case 200:

               printf("This is part of inner switch\n", a );

         }

   }



   printf("Exact value of a is : %d\n", a );

   printf("Exact value of b is : %d\n", b );



   return 0;

}