Dear
Işılay ÖZTÜRK,
You can easily generate CP2K input file using Multiwfn (
http://sobereva.com/multiwfn). Many file formats can be used as input file: .cif/POSCAR/.restart (CP2K restart file)/.pdb/.xyz/.mol/.mol2/.molden/.fch/.cub... After loading a file, input "cp2k" in main menu and input the path of the file to generate, then you will enter the interface of generating CP2K input file, there are many options to modify calculating settings. I have a blog article to illustrate how to use this interface to generate CP2K input file of various tasks:
http://sobereva.com/587 (currently written in Chinese, but you may use Google translator. I will rewrite it in English when I have spare time).
Multiwfn can also be used for visualizing CP2K output. Load .restart file, then enter main function 0, you can visualize structure. If you load a .molden file produced by CP2K, in main function 0 you can also visualize orbital isosurface.
Best regards,
Tian Lu