I hate to break it to you, but Prince Charles doesn't even have the throne yet (that's why he's still called "prince" instead of "king") and probably never will. His mummy QEII won't give it up, and Charles may end up being passed over completely so it goes straight to William (never mind what the tabloids say).
It's IMPOSSIBLE for Prince Charles to be " passed over ", and anyone else to be made king, upon his mother's demise. If you knew history, you'd know this already.
King Edward's father, thought him absolutely unsuitabe for the position; however , he DID , indeed , become KING EDWARD ; only to abdicate the throne. Why don't you knw this ? Before you decide to post a reply, please think twice begore doing so, when you don't even have the most tenuous grasp of the topic.