C++ operators

Arithmetic:  + - * / %
  number OP number    except % only with ints

Assignment:  =
  variable = expression

Increment/Decrement:  ++  --
  variable++

Relational:  ==  !=  <  <=  >  >=
  number OP number              string == string  string!=string

Logical: &&  ||  !
  AND:  boolean && boolean
  OR:   boolean || boolean
  NOT:  !boolean

Stream:
  <<  insertion
  >>  extraction