I think your English is good enough, but you need to give more details. You say you read the file and the length of a string is 4.

OK. Then you add something to or remove something from the string, so the string length changes, then you save the modified file. OK, so you have changed the file contents, one of the strings is now a different length...

Then you say that when you read the file again, it has changed. What, exactly, has changed? The file has changed, of course - you just changed the contents... Is the string you read in different from the string you wrote out?

What is it that has changed, and why is this change unexpected?

How do the file contents you posted show the problem?



the agressive whine of angry hornets was all around them now...