/*
 *  removeVowels.c
 *  comp1927 sample pracExam
 *  write a function with the specified typesignature which
 *  given a list of characters returns a pointer to the list with the
 *  nodes containing lowercase vowels removed.
 */

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "list.h"

list removeVowels (list word);

// a sample stub non-working solution which compiles
// but does not pass the tests
//
// change anything you wish below here
// and add any local static functions you wish
// your code must comply with the course
// style guide
//

list removeVowels (list word) {
   list before, after;
   after = word->rest;
   before = after;
   if (after == NULL) {
   } else if (after->rest== NULL) {
      if (after->value == 'a' ||
          after->value == 'e' ||
          after->value == 'i' ||
          after->value == 'o' ||
          after->value == 'u')  {
         word->rest=NULL;
      }
   } else {
      while (after != NULL) {
         if (after->value == 'a' ||
             after->value == 'e' ||
             after->value == 'i' ||
             after->value == 'o' ||
             after->value == 'u')  {

            after=after->rest;
            before->rest=after;
         }
      before = after;
      after=after->rest;
      }
   }
   return word;
}