char **read_file ( char * , unsigned long int * );//this is the function prototype

unsigned long int number_of_words = 0;//variable defined in main() and initialized to 0

words_from_dictionary = read_file ( "dictionary.dit" , &number_of_words );//function call in main()

char **read_file ( char *path , unsigned long int *number_of_words )
{
    char ch;
    char *line = NULL;
    
    unsigned long int len = 0;
    unsigned long int read;
    
    ( * number_of_words ) = 0;//the updated value of this will be returned
    unsigned long int i = 0;
    unsigned long int j = 0;

    FILE *pointer = NULL;
    char **word_array = NULL;

    pointer = fopen ( path , "r" );//read some file from a path
    if ( pointer == NULL )
    {
        perror ( "File read error: read file" );
    }

    while ( !feof ( pointer ) )
    {
        ch = fgetc ( pointer );
        if ( ch == '\n' && ch != EOF )
        {
            ( * number_of_words ) ++;//counting the number of words in the file, this value will be returned to the main() along with another string array.
        }
    }

    rewind ( pointer );

    word_array = malloc ( ( * number_of_words ) * sizeof ( char * )
);
    if ( word_array == NULL )
    {
        perror ( "malloc() memory allocation failure" );
    }

    for ( i = 0 ; i < ( * number_of_words ) ; i ++ )
    {
        word_array [ i ] = malloc ( 100 * sizeof ( char ) );
        if ( word_array [ i ] == NULL )
        {
            perror ( "malloc() memory allocation failure" );
        }
    }

    i = 0;
    j = 0;

    while ( !feof ( pointer ) )
    {
        while ( ( read = getline ( &line, &len , pointer ) ) != - 1 )
        {
            strcpy ( word_array [ i ] , line );
            if ( i <= ( * number_of_words ) )
            {
                i ++;
            }
        }
    }

    fclose ( pointer );
    return ( word_array );//Returning this array of string
}

 unsigned long int *word_position = NULL;
    unsigned int *document_id = NULL;
    long double *score = NULL;

read_score_file ( word_position , document_id , score );

void read_score_file ( unsigned long int *word_position , unsigned int *document_id , long double *score )
{
    FILE *score_file = NULL;

    unsigned int i = 0;

    score_file = fopen ( "scores.sce" , "r" );
    if ( score_file == NULL )
    {
        fprintf ( stderr , "file open error: score:file\n" );
    }

    word_position = ( unsigned long int * ) malloc ( TOTAL_WORD_IN_DICS * sizeof ( unsigned long int ) );
    if ( word_position == NULL )
    {
        fprintf ( stderr , "malloc() memory allocation failure" );
    }

    document_id = ( unsigned int * ) malloc ( TOTAL_WORD_IN_DICS * sizeof ( unsigned int ) );
    if ( document_id == NULL )
    {
        fprintf ( stderr , "malloc() memory allocation failure" );
    }

    score = ( long double * ) malloc ( TOTAL_WORD_IN_DICS * sizeof ( long double ) );
    if ( score == NULL )
    {
        fprintf ( stderr , "malloc() memory allocation failure" );
    }

    while ( !feof ( score_file ) )
    {
        int32_t return_value = 0;

        return_value = fscanf ( score_file , "%ld %u %Lg\n" , ( word_position + i ) , ( document_id + i ) , ( score + i ) );
        if ( return_value == -1 )
        {
            break;
        }
        i ++;
    }
}

    read_score_file ( word_position , document_id , score );