Operators (Unary Operator) in C #8

Key Points :

Operators :

                                "Operators are the special symbols which are used to perform operations.

                                The symbols which are used to perform arithmetic, logical, relational, etc operations

                                are known as Operators."

                Ex  + , - , / , %  etc are operators.

               

                Let us know some general terms:

                Ex. 20 + 40

                                In the example above the numbers 20 & 40 are known as operands.

                                The '+' symbol is known as operator.     

                Types of operators :

                                1] Unary operators

                                2] Binary operators

                                3] Ternary operators

                               

                1] Unary operators :-

                                "The operator which needs only one operand to perform the operation is known as Unary

                                operators."

                                Ex. a++;

                                In the above statement 'a' is a variable.

                                '++' is an operator.

                Unary operator is of 2 types :

                a) Increment operator (++)

                b) Decrement operator (--)

                a) Increment operator

                                As in name, the increment operator is used for increment the value.

   

            Increment Operator is also divided in 2 types:

                1) Prefix Increment operator (++a)

                2) Postfix Increment operator (a++)

                1) Prefix Increment operator

                                In Prefix Increment operator the value of the operator is incremented at the start.

                                Syntax :                ++variable_name

                                Ex. int i = 5,j = 0;

                                    j = ++i;

                                    printf("j = %d",j);

                                Output: j = 6;

                2) Postfix Increment operator

                                In Postfix Increment operator the value of the operator is incremented at the last.

                                Syntax :                variable_name++

                                Ex. int i = 5,j = 0;

                                    j = i++;

                                    printf("j = %d",j);

                                Output: j = 5;

                b) Decrement operator

                                As in name, the Decrement operator is used for Decrement the value.

                Decrement Operator is also divided in 2 types:

                1) Prefix Decrement operator (--a)

                2) Postfix Decrement operator (a--)

                1) Prefix Decrement operator

                                In Prefix Decrement operator the value of the operator is Decremented at the start.

                                Syntax :                --variable_name

                                Ex. int i = 5,j = 0;

                                    j = --i;

                                    printf("j = %d",j);

                                Output: j = 4;

                2) Postfix Decrement operator

                                In Postfix Decrement operator the value of the operator is Decremented at the last.

                                Syntax :                variable_name--

                                Ex. int i = 5,j = 0;

                                    j = i--;

                                    printf("j = %d",j);

                                Output: j = 5;