unix ftp in c.

I suppose you only want to write an ftp client, and that you have an ftp server running on the NT.  Writing a client is not very hard, but as you certainly know, there is one in every standard unix distribution.  So make sure you have a good reason to start reinventing the wheel.
This said, you have a few options:
1. Get RFC959 and implement the client functionality.  If you know about socket programming, it really is not that hard.
2. Since you have a Unix box, use the standard ftp server deamon to do all the hard work and just write your client to handle the control connection, initiating transfer between the NT and Unix ftp server (so called proxy transfers).  See Q.10052364 for more info on how this works.
3. Get the source code for the ftp client under Linux.  This will give you a very good starting point (Just don't copy it and put your name under it).
4. Wait for someone to supply you with a reference to a library that implements getFile/putFile.  I suppose there must be one somewhere, but I do not have any info on this.  But if you are looking for additional control over the ftp session (the only good reason to write your own client, in my opinion), I do not think you really want do you such a library.

Check out Q.10095891.  Client FTP functionality is currently being discussed under that topic.

You can, but how do you pass the commands you want executed ?
And just try to capture errors or even making sure that the files are down- or uploaded.  Every 'normal' ftp client I have seen is well designed to be used interactively.  Programmatic control was never an option during the design, I suppose.

rbr believe me or not, if i had new how to call this ftp client from c, I wasn't put this question here

ofer1, did you get some work done on your ftp client implementation ?