Winsome Publication: Computer Concept & Programming In C - Unit II

Q.11 Give precedence and associativity of operators. (AKTU. 2012 - 13)

Related Questions -

Q. What is the use of bitwise operators? Describe any two bitwise operators with example. (AKTU. 2008-09)

Or. What are the different bit operators used in C? Give an example of each. (AKTU. 2009-10)

(Look bitwise operators)

Ans. Operator Precedence And Associativity: -

Precedence Of Relational And Logical Operators: -

Table below shows the relative precedence of the relational and logical operators.

Operator Associativity Precedence

Arithmetic Operator

! Right to left Highest

> > = < < = Left to right

= = ! = Left to right

& & Left to right

| | Left to right Lowest

In order to see how the precedence works, look at the expression (a = = b & & x = = y || m = = n). This expression is evaluated as TRUE if one of the following conditions is met:

1. If a = = b is evaluated as TRUE AND x = = y is evaluated as TRUE, OR m = = n is evaluated as TRUE.

2. This means that the operator && is evaluated before the operator | | because of having higher precedence. In other words, this expression is evaluated as if it had parentheses as follows: (a = = b && x = = y) | | (m = = n).

* Bit operators: -

Using C, you can have access to every bit in memory thus performing very low-level operations.

To understand clearly the working of bit wise operators let us take the following example:

You know that the number 8 is represented in binary as 00001000 and 7 as 00000111 respectively.

1. The bit operation & is known as bitwise AND.

It works as: 8&7 =