rename file name

[weixj2003ld]

Thk u for your answer.

I have used static implementation of rename,problem still exists.

I want to modify some contents of a text file,and do as follows:
1.open the text file(a.txt),and read the contents of it and modify some of it.
2.write the modified contents in a new file(b.txt);
3.delete a.txt
4.rename b.txt to a.txt.

now rename can not work properly,what other ways should I go?

[aamer4yu]

Try using absolute paths for renaming...
Also do you have rights to change file names on your system ?

[kevinchannon]

I want to modify some contents of a text file,and do as follows:
1.open the text file(a.txt),and read the contents of it and modify some of it.
2.write the modified contents in a new file(b.txt);
3.delete a.txt
4.rename b.txt to a.txt.?

Do you have a specific reason for doing all these steps? If you:

1. open the file
2. read in the data
3. close the file
4. change the bits you want to change
5. re-open the file (but for writing this time)
6. write the the new data

this should write over all the old data. That way you don't have to worry about changing the name at all.