I don’t know if that’s true or not, but while the thought never crossed my mind before your comment, it’s now canon in my mind. Yes, C# is spelled C++++ with a ligature.

The name is actually pretty clever (the fact that it was originally un-googlable notwithstanding). There are at least three interpretations:

* "C sharp" as in "C but higher",

* C with four pluses, and

* a homophone of "see sharp"