[lex.operators]

The lexical representation of C++ programs includes a number of preprocessing tokens that are used in the syntax of the preprocessor or are converted into tokens for operators and punctuators:

preprocessing-op-or-punc:
preprocessing-operator
operator-or-punctuator

preprocessing-operator: one of
# ## %: %:%:

operator-or-punctuator: one of
{ } [ ] ( )
<: :> <% %> ; : ...
? :: . .* -> ->* ~
! + - * / % ^ & |
= += -= *= /= %= ^= &= |=
== != < > <= >= <=> && ||
<< >> <<= >>= ++ -- ,
and or xor not bitand bitor compl
and_eq or_eq xor_eq not_eq

Each operator-or-punctuator is converted to a single token in translation phase 7 .

5 Lexical conventions [lex]

5.12 Operators and punctuators [lex.operators]