int find_words_of_minimum_length( const WORD_LIST* wlist_in, WORD_LIST* wlist_out, const int min_length );
int find_words_of_maximum_length( const WORD_LIST* wlist_in, WORD_LIST* wlist_out, const int max_length );

typedef struct st_word
{
    char*           word;
    int             length;
    struct WORD*    prev;
    struct WORD*    next;
} WORD;

int 
add_word( WORD_LIST* wlist, const char* word )
{
    int rc = 0;
    WORD* node = (WORD*)malloc( sizeof( WORD ) );
    if( node )
    {
        node->length = strlen( word );
        node->word = (char*)malloc( 1+ node->length );
        strcpy( node->word, word );
        if( wlist->head == 0 )
        {
            wlist->head = node;
            wlist->tail = node;

            node->prev = (struct WORD*)node;
            node->next = 0;
        }
        else
        {
            node->prev = (struct WORD*)wlist->tail;
            wlist->tail->next = (struct WORD*)node;
            node->next = 0;
            wlist->tail = node;
        }
        ++wlist->count;
    }
    else
    {
        rc = ENOMEM;
    }
    return rc;
}

#include<ctype.h>
#include<math.h>
#include<stdio.h>
#include<string.h>

#define word_length 15
                   
int main (void)
{
    // All datatypes used in the function
    int i, j, n, flag, flag2;
    char input_word[word_length], input_word2[word_length];
    char dictionary_word[word_length], dictionary_word2[word_length];
    
    // File pointer to input file
    FILE *inp;      
    
    // Opens and reads database file of words
	inp = fopen("dictionary.txt", "r");
    
    // Takes input from user and puts it into a character array
    printf("Enter a word that is 15 or less characters long to search for below.");
    printf("You may use *'s or .'s as wildcards but no spaces or hyphens./n");
    printf("Search Term: ");
    scanf("%s", input_word);
    
    // Copies input_word to new string which can be manipulated
    strcpy(input_word2, input_word);    
    
    // Converts input word into lowercase letters
    strlwr(input_word2);    
    
    // Takes word from database file and makes it into a new string
    while (fscanf(inp, "%s", dictionary_word) != EOF);
    {
        // Converts database word into new string
        strcpy(dictionary_word2, dictionary_word);
   
        // Breaks down input word into individual letters
        i=0;
        while (input_word2[i] != '\0')
        {
           // Does lots of cool stuff dealing with the asterisk
           if (input_word2[i]== '*')
              j=(i+1);
              // Means that asterisk is at the end of the string
              if (input_word2[j]== '\0')
                 flag2=1;
                 break;
              // Means a letter comes after the asterisk
              else
                 // Breaks down dictionary word into individual letters then looks
                 // for character input_word2[j] in dictionary_word2
                 n=i;
                 while (dictionary_word2[n-1] != '\0')
                 {
                     if (dictionary_word2[n]==input_word2[j])
                       i=i+n;
                       break;
                     if (dictionary_word2[n]== '\0')
                        printf("%s does not match", dictionary_word);
                        flag2=0;
                        break;
                     else
                         n++;
                 }
           // Skips letter by incrementing counter 
           if (input_word2[i]== '.')
              i++;
           // Compares the letter in position "i" in each word and returns value
           else
               flag = strcmp(input_word2[i], dictionary_word2[i]);
               if (flag==0)
                  printf("%s does not match", dictionary_word);
                  flag2=0;
                  break;
               if (flag==1)
                  i++;
        }
        if (flag2 != 0)
           printf("%s does match", dictionary_word);
   }
	// Closes the database file
    fclose(inp);
	
    return(0);
}

              if (input_word2[j]== '\0')    // LINE 47
                 flag2=1;
                 break;
              // Means a letter comes after the asterisk
              else
                 // Breaks down dictionary word into individual letters then looks
                 // for character input_word2[j] in dictionary_word2
                 n=i;
                 while (dictionary_word2[n-1] != '\0')

if (input_word2[j]== '\0')
{
  flag2=1;
  break;
}
// Means a letter comes after the asterisk
else
{
  // Breaks down dictionary word into individual letters then looks
  // for character input_word2[j] in dictionary_word2
  n=i;
  while (dictionary_word2[n-1] != '\0')
  {