Unary Operators in C Language

OPERATORS GROUPS 

(ACCORDING TO THEIR PRIORITY ORDERS)

UNARY OPERATORS

Increment and Decrement operators

Increment ++ and Decrement -- to change the value of an operand (constant or variable) by 1.

Increment ++ increases the value by 1 whereas Decrement -- decreases the value by 1. Both operators are unary operators, which means they only operate on a single operand.

++ INCREMENT OPERATOR 

-- DECREMENT OPERATOR 

Note :-   Post and Pre Increment/decrement Operator has same function but

                      Post Increment/decrement  operator has lowest priority among

                       above all operator and Pre Increment/decrement 

                          operator has top priority  among all operator.

Size of operator

Size of is an unary operator which returns the size of data( constant, variables, array, structure etc).

Example :

Output

x=2

y=8

z=2

Note :-  In above output, value of y=8 because by default any value written                   in point (3.56) consider as double type until you mentioned                            it's type as float as we seen in above example and value of z=2                       because of ASCII Code, every character constant internally 

         consider as integer.