No.
Really, take your time to read a good C++ book like the C++ primer. Don't read internet tutorials, most of them don't teach C++ correctly.
Attempting to use SFML like this is a waste of time, you'll get stuck again and again. The usage of pointers is a very basic topic, and it can't be explained in two sentences. Even if we answer this specific question for you, the next problem is sure to come soon.