Unary operators
Categories of Operators and Punctuators
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Referencing operator ('&')
Dereferencing operator ('*')
Unary plus and minus operators ('+' and '-')
Increment operator ('++')
Decrement operator ('--')
Logical negation operator ('!')
Bitwise complement operator ('~')
Note:
In GNU C the operator '&&' may also be used as unary operator for taking
addresses of labels
.