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syntactic unit > symbol > operator > unary operator

unary operator
subject			fact

unary operator	if a unary operator uses a postfix notation then the unary operator appears after its operand
	if a unary operator uses a prefix notation then the unary operator appears before its operand
	has definition An operator that has 1 argument
	is a subtopic of Operators
	is a kind of operator
operator	evaluates to its result
	has precedence
	has purpose to perform a simple function of 1 to 3 arguments
	is part of an expression
	is evaluated before another operator with lower precedence
	returns a value called its result
syntactic unit	has syntax rule bold = mandatory italic = non-terminal normal font = optional

Kinds of unary operator :

• ! (5 facts)
• ++ (8 facts)
• -- (8 facts)
• ~ (4 facts)