I know that there are many types of comment, I will list out a few of them (those related):
// - Normal comment
/// - This would make the comment bold
And surprisingly, the IDE would not raise an error in this code (Even it is not executed, it should still control the programmer somewhere):
/////////////////// HI!
Why would the standard allow this to happen?
BTW, my IDE is Code::Blocks 20.03 if it matters.
As per the C++ standard: lex.comment
The characters
//start a comment, which terminates immediately before the next new-line character.
From the above, you can infer that every character (other than newline) which follows the first two / characters is part of the comment.
If that wasn't already clear enough, it goes on to note:
The comment characters
//,/*, and*/have no special meaning within a//comment and are treated just like other characters.