Searching for differences in text file

[Smidgen]

I have a ten sentence *.txt file that I want to search and find any differences in the individual sentences. The sentences are sequential. I've coded successfully to find the first mis-matched sentences, but can't work out how to continue searching for other mis-matches. What I want to do is continue the search onward from the first mis-matched line already found. Heres an example of the text file --
Now is the time to come to the aid.
Now is the time to come to the aid.
Now is the <b>slime</b> to come to the aid.
Now is the time to come to the aid.
<b>New</b> is the time to come to the aid.

 

[Geates]

Open the text file and establish two pointers at the beginning of the file. Iterate through the file til eof, moving the pointers as needed. (It's been a long time since I programmed in BASIC)

FUNCTION checkLine($line)
  'function to compare $line to $text"
END FUNCTION

$text = "Now is the time to come to the aid"
RecLen = 35
OPEN "file.txt" FOR RANDOM AS #1 LEN = RecLen

curLine = 0
badLines = 0
DO WHILE NOT EOF(#1)
   LINE INPUT #1, $line
   curLine = curLine + 1
   IF checkLine($line, $text) THEN
      badLines = badLine + 1
   END IF
LOOP

CLOSE #1

PRINT "There are ", curLine, " lines total.  ", badLines, " of which are wrong"

-Geates
[/code]

"I hope I can chill and see the change - stop the bleed inside and feel again. Cut the chain of lies you've been feeding my veins; I've got nothing to say to you!"
-Infected Mushroom

"I do not offer answers, only considerations."
- Geates's Disclaimer

 

[foxidrive]

Do you want to identify if the lines are different (that's easy) or do you want to print out the actual differences in each set of two lines?