macOS Making a log file in Xcode Application

arjit said:

I am trying to make log file in for my application now when the program starts i need the file to deleted if it exits and appened in many times in the program how to solve this i FSCreateFileUnicode this but its not working.

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What error does FSCreateFileUnicode return when it doesn't work?

That doesn't make sense.

If the file exists, then there's no need to create it. Simply open it for writing and append your data.

If the file doesn't exist, then create it before opening it.

There are functions for opening existing files for writing. Read the FileManager docs. Look for FSOpenFork.

http://developer.apple.com/mac/libr...ference/File_Manager/Reference/reference.html

You can also use the C standard I/O function fopen(), and it will handle creation, appending, etc. when given the right parameters.