c - 从文件中单独读取单词

Question

我正在尝试制作一个程序，逐行扫描包含单词的文件，如果您向后阅读(回文)，则删除拼写相同的单词

这是 program.c 文件:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "header.h"

int main(int argc, char **argv)
{
if(argc != 3)
{
   printf("Wrong parameters");
   return 0;
}
FILE *data;
FILE *result;
char *StringFromFile = (char*)malloc(255);
char *word = (char*)malloc(255);

const char *dat = argv[1];
const char *res = argv[2];

data = fopen(dat, "r");
result =fopen(res, "w");

while(fgets(StringFromFile, 255, data))
{
    function1(StringFromFile, word);
    fputs(StringFromFile, result);
}
free(StringFromFile);
free (word);
fclose(data);
fclose(result);
return 0;
}

这是 header.h 文件:

#ifndef HEADER_H_INCLUDEC
#define HEADER_H_INCLUDED

void function1(char *StringFromFile, char *word);
void moving(char *StringFromFile, int *index, int StringLength, int WordLength);

#endif

这是函数文件:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "header.h"

void function1(char *StringFromFile, char *word)
{
int StringLength = strlen(StringFromFile);
int WordLength;
int i;
int p;
int k;
int t;
int m;
int match;
for(i = 0; i < StringLength; i++)
{   k=0;
    t=0;
    m=i;
if (StringFromFile[i] != ' ')
{   while (StringFromFile[i] != ' ')
    {
        word[k]=StringFromFile[i];
        k=k+1;
        i=i+1;
    }
//printf("%s\n", word);
WordLength = strlen(word)-1;
p = WordLength-1;
match=0;
while (t <= p)
{
    if (word[t] == word[p])
        {
            match=match+1;
        }
    t=t+1;
    p=p-1;
}
if ((match*2) >= (WordLength))
{
    moving(StringFromFile, &m, StringLength, WordLength);
}
}
}

}

void moving(char *StringFromFile, int *index, int StringLength, int WordLength)
{   int i;
    int q=WordLength-1;
    for(i = *index; i < StringLength; i++)
{
    StringFromFile[i-1] = StringFromFile[i+q];
}
*(index) = *(index)-1;
}

不过，它并没有正确读取每个单词。

这是数据文件:

abcba rttt plllp
aaaaaaaaaaaa
ababa
abbbba
kede

这些是程序读取的单独单词:

abcba
rttta
plllp
aaaaaaaaaaaa
ababa
abbbba
kede

这是结果文件:

abcba rtttp



kede

如果一行中只有一个词，它工作正常，但当有多个词时，它就会乱七八糟。感谢您的帮助。

Answer 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "header.h"

# define MAX 255

int Find_Number_Words_in_Line( char str[MAX] )
{
   char *ptr;
   int count = 0;
   int j;

   /* advance character pointer ptr until end of str[MAX] */
   /* everytime you see the space character, increase count */
   /* might not always work, you'll need to handle multiple space characters before/between/after words */

   ptr = str;
   for ( j = 0; j < MAX; j++ )
   {
      if ( *ptr == ' ' )
         count++;
      else if (( *ptr == '\0' ) || ( *ptr == '\n' ))
         break;

      ptr++;
   }

   return count;
}

void Extract_Word_From_Line_Based_on_Position( char line[MAX], char word[MAX], const int position )
{
   char *ptr;

   /* move pointer down line[], counting past the number of spaces specified by position */
   /* then copy the next word from line[] into word[] */
}


int Is_Palindrome ( char str[MAX] )
{
   /* check if str[] is a palindrome, if so return 1, else return 0 */
}


int main(int argc, char **argv)
{
   FILE *data_file;
   FILE *result_file;
   char *line_from_data_file = (char*)malloc(MAX);
   char *word = (char*)malloc(MAX);
   const char *dat = argv[1];
   const char *res = argv[2];
   int j, n;

   if (argc != 3)
   {
      printf("Wrong parameters");
      return 0;
   }

   data_file = fopen(dat, "r");
   result_file = fopen(res, "w");

   fgets( line_from_data_file, MAX, data_file );
   while ( ! feof( data_file ) )
   {
       /*
          fgets returns everything up to newline character from data_file,
          function1 in original context would only run once for each line read
          from data_file, so you would only get the first word

             function1( line_from_data_file, word );
             fputs( word, result_file );
             fgets( line_from_data_file, MAX, data_file );

          instead try below, you will need to write the code for these new functions
          don't be afraid to name functions in basic English for what they are meant to do
          make your code more easily readable
       */

      n = Find_Number_Words_in_Line( line_from_data_file );
      for ( j = 0; j < n; j++ )
      {
         Extract_Word_From_Line_Based_on_Position( line_from_data_file, word, n );
         if ( Is_Palindrome( word ) )
            fputs( word, result_file );  /* this will put one palindrome per line in result file */
      }

      fgets( line_from_data_file, MAX, data_file );
   }
   free( line_from_data_file );
   free( word );

   fclose( data_file );
   fclose( result_file );

   return 0;
}