I think you should write a small script which can connect to a remote machine and do all the file transfers that u wanna do.
Change it mode to make it executable ( i prefer chmod 755 filename)

Then in your C program, add the header file Stdlib.h and execute the script file from your C code using the function:
system(script_filename);

This approach will also give you the flexibility to even change the files u wanna transfer by just changing filename in your scriptfile without having to make any changes to your C code.

Good luck then......