This is my program:

    // Implements a dictionary's functionality

    #include <ctype.h>
    #include <stdbool.h>
    #include <string.h>
    #include <stdlib.h>
    #include <stdio.h>
    #include <strings.h>


    #include "dictionary.h"

    // Represents a node in a hash table
    typedef struct node
    {
        char word[LENGTH + 1];
        struct node *next;
    }
    node;

    // TODO: Choose number of buckets in hash table
    const unsigned int N = 26;
    int count_word = 0;

    // Hash table
    node *table[N];

    // Returns true if word is in dictionary, else false
    bool check(const char *word)
    {
        int index=hash(word);
        node *cursor = table[index];
        while (cursor != NULL)
        {
            if (strcasecmp(word,cursor->word) == 0)
            {
                return true;
            }
            cursor= cursor->next;
        }
        return false;
    }

    // Hashes word to a number
    unsigned int hash(const char *word)
    {  int c =0;
       for(int i = 0; i<strlen(word); i++)
       {
           c+=tolower(word[i]);
       }

        // TODO: Improve this hash function
        return (c % N);
    }

    // Loads dictionary into memory, returning true if successful, else false
    bool load(const char *dictionary)
    {
         FILE *file = fopen(dictionary,"r");
          if (file == NULL)
          {
            return false;
          }
          char word[LENGTH +1];
          while(fscanf(file,"%s",word) != EOF)
          {
            node *n= malloc(sizeof(node));
            if (n == NULL)
            {
                fclose(file);
                return false;
            }
            strcpy(n->word ,word);
            int index = hash(n->word);
            n->next = table[index];
            table[index]=n;
            count_word++;

          }
        // TODO
        fclose(file);
        return true;
        // TODO
        return false;
    }

    // Returns number of words in dictionary if loaded, else 0 if not yet loaded
    unsigned int size(void)
    {

        // TODO : TO return thr number of words
        return count_word;
    }

    // Unloads dictionary from memory, returning true if successful, else false
    bool unload(void)
    {
        for(int i=0 ;i<26;i++)
        {

          node *tmp = table[i];


          while( tmp != NULL)
          {
            node *cursor = tmp;
            cursor = cursor->next;
            free(tmp);
            tmp = cursor;

          }
          if (tmp == NULL)
          {
            return true;
          }
        }


        // TODO
        return false;
    }

This is what the CS50 tool is showing:

```lang-none
:) dictionary.c exists
:) speller compiles
:) handles most basic words properly
:) handles min length (1-char) words
:) handles max length (45-char) words
:) handles words with apostrophes properly
:) spell-checking is case-insensitive
:) handles substrings properly
:( program is free of memory errors
    valgrind tests failed; see log for more information.
```