Question

I’ve been reading up on strtok and thought it would be the best way for me to compare two files word by word. So far i can’t really figure out how i would do it though

Here is my function that perfoms it:

int wordcmp(FILE *fp1, FILE *fp2)
{
   char *s1;
   char *s2;
   char *tok;
   char *tok2;
   char line[BUFSIZE];
   char line2[BUFSIZE];
   char comp1[BUFSIZE];
   char comp2[BUFSIZE];
   char temp[BUFSIZE];
   int word = 1;
   size_t i = 0;

while((s1 = fgets(line,BUFSIZE, fp1)) && (s2 = fgets(line2,BUFSIZE, fp2)))
{
    ;
}

tok = strtok(line, " ");
tok2 = strtok(line, " ");

while(tok != NULL)
{
    tok = strtok (NULL, " ");

}


return 0;
}

Don’t mind the unused variables, I’ve been at this for 3 hours and have tried all possible ways I can think of to compare the values of the first and second strtok. Also I would to know how i would check which file reaches EOF first.

when i tried

  if(s1 == EOF && s2 != EOF)
  {
      return -1;
  }

It returns -1 even when the files are the same! Is it because in order for it to reach the if statement outside of the loop both files have reached EOF which makes the program always go to this if statement?

Thanks in advance!

Answer 1

If you want to check if files are same try doing,

    do {
       s1 = fgetc(fp1);
       s2 = fgetc(fp2);

       if (s1 == s2) {
            if (s1 == EOF) {
                return 1; // RETURN TRUE
            }
            continue;
      }
      else {
        return -1;  // RETURN FALSE
      }

  } while (1);

Good Luck 🙂