Q: icloud on pc doesnt show photos

iTunes sync is used to move photos from the computer to the iPhone (the opposite direction of what you are trying to do).

The following has instructions for transferring photos from the phone to the computer via USB cable: Import photos and videos from your iPhone, iPad, or iPod touch to your Mac or Windows PC - Apple Support

You can also do it by using a 3rd party app such as http://www.photosync-app.com/ or by using 3rd party services such as Dropbox or by using Photo Stream (but only for new photos taken after you turned on Photo Stream) My Photo Stream FAQ - Apple Support