What are the names of piano notes in letters?

What are the names of piano notes in letters?
Trying to answer this without a handy keyboard to demonstrate on is difficult, but I will try :)WK = white key BK = black keyStarting from the note directly in the centre of the piano, it goes:WK = C BK = C sharp WK = D BK = D sharp WK = E WK = F BK = F sharp WK = G BK = G sharp WK = A BK = A sharp WK = B WK = CBear in mind that all sharps also equal flats. For example, F sharp also equals G flat, A sharp also equals B flat.