C中的goto语句

#include <stdio.h>



int main () {



   /* local variable definition */

   int a = 10;



   /* do loop execution */

   LOOP:do {



      if( a == 15) {

         /* skip the iteration */

         a = a + 1;

         goto LOOP;

      }



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

      a++;



   }while( a < 20 );



   return 0;

}