Expressions with Unary Operators

Unary operators act on only one operand in an expression. The unary operators are:

• Indirection operator (*)
• Address-of operator (&)
• Unary plus operator (+)
• Unary negation operator (–)
• Logical negation operator (!)
• One's complement operator (~)
• Prefix increment operator (++)
• Prefix decrement operator (––)
• Cast Operator ()
• sizeof operator
• __uuidof operator
• __alignof operator
• new operator
• delete operator

These operators have right-to-left associativity.

Grammar

unary-expression :

postfix-expression
++unary-expression
––unary-expression
unary-operator cast-expression
sizeof .unary-expression
sizeof ( type-name )
allocation-expression
deallocation-expression

unary-operator : one of

* & + – ! ~

See Also

Types of Expressions