It's not a formal distinction, but in C++ code where all the ordinary comments use //, it can be handy to use /* ... */ to comment out a block. (Of course, if

It's not a formal distinction, but in C++ code where all the ordinary comments use //, it can be handy to use /* ... */ to comment out a block. (Of course, if there's a stray /* ... */ comment already in the area to be commented out, this will fail. But an editor with appropriate syntax colouring can make that immediately apparent.)