/*******************************   stopper.c   ******************************** * *  Program to demonstrate and test stop list filtering lexical analyzer DFA *  generator and driver functions.  This program assumes a stop list in the *  file stop.wrd.  It takes a single filename on the command line and lists *  unfiltered terms on stdout. ***/#include <stdio.h>#include "strlist.h"#include "stop.h"/******************************************************************************//*FN***************************************************************************        main( argc, argv )   Returns: int -- 0 on success, 1 on failure   Purpose: Program main function   Plan:    Part 1: Read the stop list from the stop words file            Part 2: Create a DFA from a stop list            Part 3: Open the input file and list its terms            Part 4: Close the input file and return   Notes:   This program reads a stop list from a file called "stop.wrd,"            and uses it in generating the terms in a file named on the            command line.**/intmain( argc, argv )   int argc;     /* in: how many arguments */   char *argv[]; /* in: text of the arguments */   {   char term[128];  /* for the next term found */   FILE *stream;    /* where to read characters from */   StrList words;   /* the stop list filtered */   DFA machine;     /* build from the stop list */           /* Part 1: Read the stop list from the stop words file */   words = StrListCreate();   StrListAppendFile( words, "stop.wrd" );                   /* Part 2: Create a DFA from a stop list */   machine = BuildDFA( words );              /* Part 3: Open the input file and list its terms */   if ( !(stream = fopen(argv[1],"r")) ) exit(1);   while ( NULL != GetTerm(stream,machine,128,term) )      (void)printf( "%s\n", term );                 /* Part 4: Close the input file and return */   (void)fclose( stream );   return(0);   } /* main */